History of mathematics Lectures

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    One Class. Many Perspectives.


    A tremendous variety of students in a GRCC Marketing class talk about the value of having diverse perspectives.

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    GRCC | Nursing


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    GRCC | Radiologic Technology


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    Adult Education Celebration 2017


    Held at the Leslie E. Tassell M-Tec building. Honoring students that are graduating from the program along with those that have completed ESL, NCRC and citizenship certificates.

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    Radiologic Technology Advisory Board


    Thank you to the local healthcare providers who participate in GRCC's Radiologic Technology Advisory Board, ensuring that the curriculum and methods meet industry expectations.

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    2017 Distinguished Alumnus

    Scott S. Haraburda
    An Army veteran, engineer and inventor is Grand Rapids Community College's 2017 Distinguished Alumnus.

    Retired Col. Scott Haraburda received an associate degree in 1981 from what was then Grand Rapids Junior College. He went on to earn a bachelor's degree in chemistry from Central Michigan University, a Master of Strategic Studies from the U.S. Army War College, and master's and doctoral degrees in chemical engineering from Michigan State University.

    He served in the Army from 1981 through 2010, including a 2007 deployment to Kuwait to correct logistics problems in the war zone. He was awarded the Legion of Merit and three Meritorious Service Medals.

    In addition to his military service, Haraburda is an inventor, making key contributions to the development of heat exchangers and spacecraft propulsion. He holds two U.S. patents and has seven patent requests pending. In 2013, the National Society of Professional Engineers named Haraburda a Fellow, and he served as president of the Indiana Society of Professional Engineers from 2014-15.

    Col. Haraburda has represented GRCC on the world stage, through both his military service and the contributions he has made to engineering, said President Dr. Steven C. Ender. We are proud to honor him as our Distinguished Alumnus!

    Haraburda has fond memories of his time at GRJC and notes that his wife, Marie, is an alumna.

    Grand Rapids Community College provided me an excellent foundation that helped me to grow as a student and continue my quest for learning throughout my life,” he said. “I am honored to be recognized as the Distinguished Alumnus for 2017.

    Grand Rapids Community College is proud to call Scott an alumnus, and now a Distinguished Alumnus.

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    GRCC Graduation 2017


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    Graduation is tomorrow...TUNE IN LIVE AT 6PM FRIDAY MARCH 28TH!!!


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    The Open Gate of Mathematics: From the Alhambra to Escher


    In 1922, a 24-year-old artist named M.C. Escher visited the Alhambra, a 13th-century Moorish fortress and palace in Granada, Spain. The stunning Islamic design and geometric patterns overwhelmed the young artist, who began a 50-year obsession with dividing the plane. Today, Escher’s name is synonymous with tessellations, symmetry, and impossible shapes. His art’s mathematical structure has affected fields as far-reaching as combinatorics, graph theory, non-Euclidean geometry, and crystallography. This seminar focuses on Escher’s exploration of the two-dimensional plane and his link to the Moorish artisans of the past, begging the question: Were these artists doing math? Presented by Jeff Powers.

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    GRCC Honors Banquet 2017


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    TRiO at Grand Rapids Community College


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    Math Hippies - The Pythagoreans by Carolyn Evans


    Once upon a time, in an Italian seaport far far away, a strange cult of young aristocrats arose under the leadership of the mystical and mysterious Pythagoras...

    The Pythagoreans were a philosophical society with some pretty radical world views and hippie-esque habits. They believed “that the elevation of the soul to union with the divine occurs by means of mathematics”, and that being strict vegetarians, abstinent from alcohol, and keeping no personal belongings would help them reach this goal.

    This seminar will cover some of the philosophical foundations, famous legends, mathematical discoveries, and longstanding impacts that this group accomplished thousands of years ago.

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    Student Life 2017


    Join Student Life at GRCC!

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    How to Commence at GRCC


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    Young Women Strong Leaders Keynote: Megan Sall


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    Introduction to Mindfulness | Psych Lecture


    Introduction to Mindfulness: Exploring the Science & Practical Application presented by April Hadley, LLMSW as a part of the GRCC Psychology lecture series.

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    World Affairs: “Is it all Politics? Trade and U.S. Jobs”


    Presented by Jeremy Haft, Georgetown University and CEO, SafeSource Trading, Washington, DC.

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    Student Alliance | 3.16.17


    Monthly Student meeting.

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    PI, My Favorite Number by Nancy Forrest


    One might argue that there is an infinite supply of interesting numbers. But no other number has generated as much curiosity, international competition, and mathematical passion as π. Plus it even boasts a holiday; Pi Day is on 3/14. This talk will include highlights of the history of π, how it was named, calculation of its value, and various ways people have memorized some of its digits.

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    GRCC: Creating Connections 2017


    The Grand Rapids Community College Foundation presents three student stories as part of this annual event, all of whom have greatly benefited from donor support.

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    Biodiversity scientists as honest brokers or advocates? | Jonathan Chase | TEDxUniHalle


    What is meant by biodiversity and why is it so important for our lives? This is the question Jonathan M. Chase is dealing with every day. He is a professor of biodiversity synthesis at the German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig and Center for Computer Science of Martin-Luther-University Halle-Wittenberg. At TEDxUniHalle 2017 he overviews the concept of biodiversity and its influence on ecosystem and human welfare, as well as the problems (and solutions) of how to quantify it to develop more meaningful comparisons.
    Biodiversity is a concept that has been connected to ecosystem services and functions in recent years, as well as to human health and welfare. Biodiversity is also strongly influenced by natural processes that occur over millions of years across the planet and by human activities that have occurred over the past few hundred years. Despite the clear importance of biodiversity for understanding the natural processes of life and for its direct influence on humans, our tools on exactly how to quantify what biodiversity is and how it varies to influence ecosystems remain rudimentary. The question is: Are biodiversity scientists honest brokers or advocates?

    Jonathan M. Chase is a professor of biodiversity synthesis at the German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig and Center for Computer Science of Martin-Luther-University Halle-Wittenberg.
    He was born in the U.S. in 1970, studied at University of Michigan and Utah State and completed his Ph.D. at University of Chicago in 1998. After several positions in academia and research as well as numerous awards such as the American Society of Naturalists ‘Young Investigator Prize’ (1999) and the Saint Louis Academy of Sciences ‘Innovator Award’ (2009), Jonathan Chase, together with his wife and two children, moved to Germany in 2014. His current research activities focus on biodiversity and community ecology.

    This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at

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    Catchy songs and viruses | Rebecca Waldecker | TEDxUniHalle


    From snowflakes to the Australian national anthem – With help of symmetry, mathematician Rebecca Waldecker explains how knowledge about data compression by symmetry can help us understanding viruses and catchy songs.

    Born 1979 in Aachen, Rebecca Waldecker grew up close to Kiel at the Baltic Sea and also went to university there. Her subjects were mathematics, statistics and econometrics. After the Diplom she continued with a PhD in mathematics, specialising in group theory. The next stop was Birmingham (UK) from 2007 to 2009: first as an Honorary Lecturer, then as a Research Fellow.
    She returned to Germany in 2009 to take up a junior professorship for groups and geometries at the Martin-Luther-University of Halle, and since 2015 she is a professor for algebra and head of the mathematics institute.
    Rebecca Waldecker's research interests range from abstract and very theoretical group theory to applications for algebraic geometry or computational mathematics. She frequently teaches courses at summer academies, she is involved in outreach activities, in support and coaching for young researchers (e.g. with the German Academic Scholarship Foundation) and is one of the vice-presidents of the German Association of University Professors and Lecturers.

    This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at

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    Inklings on Adventurous & Exotic Lives by Way of Narrative Practice | Kevan Walker | TEDxFairbanks


    In this talk, Kevan discusses how the clinical field of Narrative Practice has made forays into community work from its therapeutic beginnings. He also muses on the inklings he’s gotten of what possibilities play at the leading edges of our individual & collective lives, the hats we wear, relating these through bewitching stories told at the edge.

    Kevan is a Licensed Marriage & Family Therapist, though prefers the title “Relentless Collector of Magical Moments” (borrowed from acclaimed Photographer Stephen Wilkes) due to the exotic lives he’s uncovered whilst consulting the human beingness of others. Through his Narrative Therapy practice in Fairbanks, Alaska, Kevan enters conversations from a collaborative, appreciative, & curious position to then with his consultants “spit in the soup” of taken-for- granted societal norms, discover & illuminate the adventurous & exotic stories that have been edited out of their lives. He’s been most interested in engaging in discussions around: masculinity, white privilege, medical dialogues, colonization, Dignified Defiance, Latter-Day Saints, & whatever else piques his & other’s curiosity.

    This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at

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    Can You Catch Yourself? | Christy Vincent | TEDxUCO


    We all have ways of being in the world. Sometimes those work for us, but sometimes, they work to our detriment by keeping us from new insights and by allowing us to repeat unwanted behavior in our relationships. Dr. Christy Vincent, a business and professional coach, demonstrates how we can catch ourselves before we become our own stumbling block.

    Dr. Christy Vincent is a professor in the Mass Communication Department at the University of Central Oklahoma, where she teaches organizational and strategic communication courses. Her research interests include conflict management, mediation, change management, executive coaching, and training and development. Her interest in conflict management led her to the Straus Institute for Dispute Resolution at the Pepperdine University School of Law, where she earned a Certificate in Alternative Dispute Resolution (ADR).

    Christy is a communication specialist. Using her years of experience in organizational effectiveness and conflict management, she coaches individuals to increase their leadership effectiveness. While she has coached individuals in all roles, one of her specialties is working with young directors who are being groomed for higher-level positions. She particularly enjoys coaching young women leaders, who are building both careers and families at the same time. Christy helps her clients improve in essential behaviors such as managing time, setting priorities, uncovering values, working through conflict, coping with stress and managing multiple roles. She regularly conducts training courses for local corporations. Dr. Vincent’s professional experience outside of the university is in organizational development, management, sales and product development in private industry.

    This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at

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    How to Prepare for Tomorrow, By the Season | Antonio Ross | TEDxUCO


    If there was something as simple as a GPS unit that would tell your passion and the route to your personal goals, would you want it? Antonio Ross uses the four seasons to show how to plan for tomorrow, no matter what path you take.

    Antonio Ross is a recent graduate from the University of Central Oklahoma (UCO). He is currently a motivational speaker, social media manager and business owner. Antonio completed his Master of Science in Wellness Management and his Bachelor of Science in Kinesiology at UCO. During his time at UCO, he played on the 30-4 season, record-holding Men’s Basketball team, coached for 2 years, was an academic research and graduate assistant for his academic department, presented at several national and regional conferences and completed his thesis. Antonio works with the Super Bowl for the Players Networking Event. He is a motivational speaker and started a business that helps basketball players with confidence and skill development. Now, Antonio is excited to be back at UCO, with a hope to share what he has learned during his time out of college.

    This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at

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    Microbes – algae, bacteria and fungi utilized in an industrial context | Mareike Gast | TEDxUniHalle


    Renewable materials. Living production. Grown and further growing constructions. Living products. Algae, bacteria, fungi can be utilized in an industrial context. But how can we make use of their adaptability, resilience, their huge variety and fast reproduction? Which processes and products can be realized already? Manifold answers are being developed by explorative experiments, conceptions and discussions.

    Mareike Gast was born in 1979 in Hameln, completed her Foundation Studies in Art and Design at Central Saint Martins College of Art and Design in London (2000-2001) and studied Industrial Design at the Design Academy Eindhoven (2001-2005). After working as a freelancer with Nicola Stattmann and others, she opened her own office in 2011 and started teaching at Burg Giebichenstein Kunsthochschule Halle, where she now holds the chair for industrial design. She is frequently involved in projects, gives talks and publishes about materials and technologies as a starting point of developing innovative and sustainable products.

    This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at

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    Generative Knowledge: Uncovering Hidden Strengths, Purpose & Intelligence | Melissa Peet | TEDxUCO


    Creating positive change is something many wish to do, but few can truly put into practice. Melissa Peet is one of the few. With the right tools and methods, she believes everyone can make a difference using their unique gifts or “super powers.”

    Melissa R. Peet, Ph.D., is the Director of Integrative Learning and Knowledge Management at the Stephen M. Ross School of Business at the University of Michigan, Ann Arbor. She creates tools and methods that help people and organizations discover the vast reservoir of purpose, strength and intelligence they already possess, but exists outside of their conscious awareness. Several of these methods – Generative Knowledge Dialogue, Generative Coaching, and the Integrative Knowledge Portfolio Process, are being used to develop integrative and lifelong learners, leaders and change agents in a wide range of fields, disciplines and professions.

    Her coaching, learning, and assessment methods have been adopted by colleges, universities, and professional schools throughout the US and Europe, educating students in Liberal Arts, Natural and Life Sciences, as well as Business, Public Health, Dentistry, Medicine, Social Work, Engineering, Nursing, and Education schools. Dr. Peet also works with non-profit and business organizations to create succession planning and talent management strategies that leverage the vast reservoir of hidden knowledge, skills and intelligence that exists within their employees, clients and communities.

    This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at

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    Kurt Godel: The Worlds Most Incredible Mind


    Kurt Godel: The World's Most Incredible Mind.

    Either mathematics is too big for the human mind or the human mind is more than a machine ~ Godel

    Kurt Godel (1931) proved two important things about any axiomatic system rich enough to include all of number theory.

    1) You'll never be able to prove every true result..... you'll never be able to prove every result that is true in your system.

    2) Godel also proved that one of the results that you can never prove is the result that says that the system is consistent. More precisely: You cannot prove the consistency of any mathematical system rich enough to include the known theory of numbers.

    Hence, any consistent mathematical system that is rich enough to include number theory is inherently incomplete.

    Second, one of the propositions whose truth or falsity cannot be proved within the system is precisely the proposition that states that the system is consistent.

    What Godel's proof means, then, is that we can't prove that arithmetic—let alone any more-complicated system—is consistent.

    For 2000 years, mathematics has been the model—the subject—that convinces us that certainty is possible. Yet Now there's no certainty anywhere—not even in mathematics.


    Goedel's Ontological Proof.

    For those interested in a discussion of Goedel's reasoning for God, then I suggest starting with this heavily annotated work, which I recently stumbled upon.


    It's not that God is subject to the Freedom Proof or the Doubt Proof.
    According to Gödel, He's not. But we have to be, or else we are not free. So
    our truth game with God turns into something like Feynman had described.
    Feynman's Gods, every time physicists think they have the rules of the game
    figured out, throw in a new wrinkle. They let people like Feynman make
    progress, but if the Feynmans of the world learn too much, physics will stop
    being the joy and challenge that it is. The Gods don't let that happen.

    Gödel's God has to be very careful about how he lets our universe unfold.
    If the world becomes totally controllable and comprehensible, we'll be God.
    God does not object to that. In fact, according to Gödel, that is our destiny.
    But it is also the end of us as free human beings. And human freedom is an
    essential part of the beauty of God's universe.

    ~ page 251

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    A Tribute to Euler - William Dunham


    A Tribute to Euler

    William Dunham
    Truman Koehler Professor of Mathematics, Muhlenberg College

    Tuesday, October 14, 2008, at 6:00 PM

    Harvard University Science Center, Hall D

    The fall 2008 Clay Public Lecture will be held at Harvard on October 14, in association with the Harvard Mathematics Department. Known for his writings on the history of mathematics, Professor William Dunham will examine the genius of one of the world's most prolific mathematicians in his talk A Tribute to Euler in Hall D of the Harvard Science Center at 6 pm.

    Among history's greatest mathematicians is Leonhard Euler (1707-1783), the Swiss genius who produced an astonishing 25,000 pages of pure and applied mathematics of the very highest quality.

    In this talk, we sketch Euler's life and describe a few of his contributions to number theory, algebra, and other branches of mathematics. Then we examine a particular Eulerian theorem: his simple but beautiful proof that there are as many ways to decompose a whole number as the sum of distinct summands as there are ways to decompose it as the sum of (not necessarily distinct) odd summands.

    Condorcet, in his Eulogy to Euler, wrote that All mathematicians now alive are his disciples. It should be clear to those who attend the Clay Public Lecture that these words are as true today as when they were first set down, over two centuries ago.

    William Dunham, who received his B.S. (1969) from the University of Pittsburgh and his M.S. (1970) and Ph.D. (1974) from Ohio State, is the Truman Koehler Professor of Mathematics at Muhlenberg College. In the fall term of 2008 he is visiting at Harvard University and teaching a course on the work of Leonhard Euler.

    Over the years, he has directed NEH seminars on the history of mathematics and has spoken on historical topics at dozens of U.S. colleges and universities, as well as at the Smithsonian Institution, the Swiss Embassy in Washington, and on NPR's Talk of the Nation: Science Friday.

    In the 1990s, Dunham wrote three books on mathematics and its history: Journey Through Genuis: The Great Theorems of Mathematics (1990), The Mathematical Universe (1994), and Euler: The Master of Us All (1999). In the present millennium, he has written The Calculus Gallery: Masterpieces from Newton to Lebesgue (2005) and edited The Genius of Euler: Reflections on His Life and Work (2007). His expository writing has been recognized by the Mathematical Association of America with the George Pólya Award in 1992, the Trevor Evans Award in 1997, the Lester R. Ford Award in 2006, and the Beckenbach Prize in 2008. The Association of American Publishers designated The Mathematical Universe as the Best Mathematics Book of 1994.

    Our thanks to the Harvard Mathematics Department for hosting this event.

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    Calculus: What Is It?


    This video shows how calculus is both interesting and useful. Its history, practical uses, place in mathematics and wide use are all covered. If you are wondering why you might want to learn calculus, start here!

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    Mysteries of the Mathematical Universe


    Mathematical mysteries have challenged humanity’s most powerful thinkers and inspired passionate, lifelong obsessions in search of answers. From the strangeness of prime numbers and the nature of infinity, to the turbulent flow of fluids and the geometry of hyperspace, mathematics is our most potent tool for revealing immutable truths. The event was a vibrant tour to the boundaries of the mathematical universe, and explore the deep puzzles that have been solved, the masterminds who powered the breakthroughs, and the towering challenges that have shaken the confidence of some of today’s most accomplished mathematicians—even as they enlist new ways to pursue mathematical truths.

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    Original Program Date: June 3, 2011
    MODERATOR: Robert Krulwich
    PARTICIPANTS: Jonathan Borwein, Keith Devlin, Marcus du Sautoy, Simon Singh

    Welcome to the Mathematical Universe. 00:13

    Participant Introductions. 01:50

    What about math got you interested in the subject? 04:07

    Is math an instinct in humans? 10:20

    When in history did the number come into existence? 15:22

    Math was key to ancient survival. 20:27

    1+1=0 Adding in binary. 25:59

    Why are some people better at math than others? 26:55

    Nontransitive dice game. 33:44

    What's the best story about math... Infinite primes? 38:05

    Do all math problems have an answer? 44:33

    The computer replacing the mathematician? 54:40

    Can we mathematically understand the universe we are in without seeing it? 58:48

    Perfect Rigour and Grigori Perelman solved the Poincare Conjecture 01:03:10

    If you have determination math is easy. 01:09:09

    Mathematics is hierarchical and you need to start from the beginning. 01:13:07

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    MathHistory1a: Pythagoras theorem


    Pythagoras' theorem is both the oldest and the most important non-trivial theorem in mathematics.

    This is the first part of the first lecture of a course on the History of Mathematics, by N J Wildberger, the discoverer of Rational Trigonometry. We will follow John Stillwell's text Mathematics and its History (Springer, 3rd ed). Generally the emphasis will be on mathematical ideas and results, but largely without proofs, with a main eye on the historical flow of ideas. A few historical tidbits will be thrown in too...

    In this first lecture (with two parts) we first give a very rough outline of world history from a mathematical point of view, position the work of the ancient Greeks as following from Egyptian and Babylonian influences, and introduce the most important theorem in all of mathematics: Pythagoras' theorem.

    Two interesting related issues are the irrationality of the 'square root of two' (the Greeks saw this as a segment, or perhaps more precisely as the proportion or ratio between two segments, not as a number), and Pythagorean triples, which go back to the Babylonians. These are closely related to the important rational parametrization of a circle, essentially discovered by Euclid and Diophantus. This is a valuable and under-appreciated insight which high school students ought to explicitly see.

    In fact young people learning mathematics should really see more of the history of the subject! The Greeks thought of mathematics differently than we do today, and all students can benefit from a closer appreciation of the difficulties which they saw, but which we today largely ignore.

    This series has now been extended a few times--with more than 35 videos on the History of Mathematics.

    My research papers can be found at my Research Gate page, at I also have a blog at where I will discuss lots of foundational issues, along with other things, and you can check out my webpages at Of course if you want to support all these bold initiatives, become a Patron of this Channel at .

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    The Map of Mathematics


    The entire field of mathematics summarised in a single map! This shows how pure mathematics and applied mathematics relate to each other and all of the sub-topics they are made from.

    If you would like to buy a poster of this map, they are available here:

    I have also made a version available for educational use which you can find here:

    To err is to human, and I human a lot. I always try my best to be as correct as possible, but unfortunately I make mistakes. This is the errata where I correct my silly mistakes. My goal is to one day do a video with no errors!

    1. The number one is not a prime number. The definition of a prime number is a number can be divided evenly only by 1, or itself. And it must be a whole number GREATER than 1. (This last bit is the bit I forgot).

    2. In the trigonometry section I drew cos(theta) = opposite / adjacent. This is the kind of thing you learn in high school and guess what. I got it wrong! Dummy. It should be cos(theta) = adjacent / hypotenuse.

    3. My drawing of dice is slightly wrong. Most dice have their opposite sides adding up to 7, so when I drew 3 and 4 next to each other that is incorrect.

    Thanks so much to my supporters on Patreon. I hope to make money from my videos one day, but I’m not there yet! If you enjoy my videos and would like to help me make more this is the best way and I appreciate it very much.

    Here are links to some of the sources I used in this video.

    Summary of mathematics:
    Earliest human counting:
    First use of zero:
    First use of negative numbers:
    Renaissance science:
    History of complex numbers:
    Proof that pi is irrational:

    Also, if you enjoyed this video, you will probably like my science books, available in all good books shops around the work and is printed in 16 languages. Links are below or just search for Professor Astro Cat. They are fun children's books aimed at the age range 7-12. But they are also a hit with adults who want good explanations of science. The books have won awards and the app won a Webby.

    Frontiers of Space:
    Atomic Adventure:
    Intergalactic Activity Book:
    Solar System App:

    Find me on twitter, instagram, and my website:

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    Magic Squares by Brian Hadley


    Magic squares have fascinated professional mathematicians as well as mathematical hobbyists for over 4000 years. The Lo Shu magic square with its uniqueness captures the symmetry and beauty of mathematics, Dürer's square backdrops his famous engraving Melancholia, and Benjamin Franklin constructed them to keep his mind sharp. We will explore a few magic squares and unlock some of their mysteries.

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    Mathematics and sex | Clio Cresswell | TEDxSydney


    Never miss a talk! SUBSCRIBE to the TEDx channel:

    Mathematics and sex are deeply intertwined. From using mathematics to reveal patterns in our sex lives, to using sex to prime our brain for certain types of problems, to understanding them both in terms of the evolutionary roots of our brain, Dr Clio Cresswell shares her insight into it all.

    Dr Clio Cresswell is a Senior Lecturer in Mathematics at The University of Sydney researching the evolution of mathematical thought and the role of mathematics in society. Born in England, she spent part of her childhood on a Greek island, and was then schooled in the south of France where she studied Visual Art. At eighteen she simultaneously discovered the joys of Australia and mathematics, following on to win the University Medal and complete a PhD in mathematics at The University of New South Wales. Communicating mathematics is her field and passion. Clio has appeared on panel shows commenting, debating and interviewing; authored book reviews and opinion pieces; joined breakfast radio teams and current affair programs; always there highlighting the mathematical element to our lives. She is author of Mathematics and Sex.

    TEDxSydney is an independently organised event licensed from TED by longtime TEDster, Remo Giuffré (REMO General Store) and organised by his General Thinking network of fellow thinkers and other long time collaborators.

    TEDxSydney has become the leading platform and pipeline for the propagation of Australian ideas, creativity, innovation and culture to the rest of the world.

    In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)

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    Why is Time a One-Way Street?


    Leonard Susskind
    June 26, 2013

    Anyone can see that the past is different from the future. Anyone, that is, but theoretical physicists, whose equations do not seem to distinguish the past from the future. How, then, do physicists understand the arrow of time — the fact that the past and future are so different? Leonard Susskind will discuss the paradox of time's arrow and how physicists and cosmologists view it today.

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    The Riemann Hypothesis: How to make $1 Million Without Getting Out of Bed


    Mathematics is patterns and logic, imagination and rigor. It is a way of seeing and a way of thinking. Math Mornings is a series of public lectures aimed at bringing the joy and variety of mathematics to students and their families. Speakers from Yale and elsewhere will talk about aspects of mathematics that they find fascinating or useful. The talks will usually be accessible to students from 7th grade and up, although occasionally some familiarity with high-school subjects will be helpful.

    Math Mornings lectures will occur on three Sundays each semester at Yale University. The third lecture for the series was given by Yale Mathematics Professor Alex Kontorovich on December 2, 2012 who spoke about The Riemann Hypothesis: How to make $1 Million Without Getting Out of Bed.

    Please see yale.edu/scienceoutreach for further information about Math Mornings and for a list of other free Yale STEM outreach programming and events.

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    A Brilliant Madness: A Mathematical Genius Descent into Madness


    A Brilliant Madness is the story of a mathematical genius whose career was cut short by a descent into madness. At the age of 30, John Nash, a stunningly original and famously eccentric MIT mathematician, suddenly began claiming that aliens were communicating with him and that he was a special messenger.

    Diagnosed with paranoid schizophrenia, Nash spent the next three decades in and out of mental hospitals, all but forgotten. During that time, a proof he had written at the age of 20 became a foundation of modern economic theory. In 1994, as Nash began to show signs of emerging from his delusions, he was awarded a Nobel Prize in Economics. The program features interviews with John Nash, his wife Alicia, his friends and colleagues, and experts in game theory and mental illness.

    Go beyond the Oscar-winning drama A Beautiful Mind and learn more about the life of troubled mathematician and Nobel Prize-winner John Nash and his struggle with mental illness in this PBS American Experience documentary. Exclusive interviews with Nash and wife Alicia are included.

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    James Clerk Maxwell: The Greatest Victorian Mathematical Physicists - Professor Raymond Flood


    James Clerk Maxwell (1831-1879) was one of the most important mathematical physicists of all time, after only Newton and Einstein. Within a relatively short lifetime he made enormous contributions to science which this lecture will survey. Foremost among these was the formulation of the theory of electromagnetism with light, electricity and magnetism all shown to be manifestations of the electromagnetic field. He also made major contributions to the theory of colour vision and optics, the kinetic theory of gases and thermodynamics, and the understanding of the dynamics and stability of Saturn's rings.

    This talk was a part of the conference on '19th Century Mathematical Physics', held jointly by Gresham College and the British Society of the History of Mathematics. The transcript and downloadable versions of all of the lectures are available from the Gresham College website:

    Gresham College has been giving free public lectures since 1597. This tradition continues today with all of our five or so public lectures a week being made available for free download from our website. There is currently nearly 1,500 lectures free to access or download from the website.

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    Einstein Field Equations - for beginners!


    Einstein's Field Equations for General Relativity - including the Metric Tensor, Christoffel symbols, Ricci Cuvature Tensor, Curvature Scalar, Stress Energy Momentum Tensor and Cosmological Constant.

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    Mathematics: The Next Generation - Professor Peter Cameron


    Mathematics is important to us all. So it is important to enable young mathematicians, clear-thinking and passionate about their subject, to contribute at the highest level. Peter Cameron will talk about his experience designing and presenting a course for first-semester university students aiming to produce mathematicians.

    This is the 2013 joint London Mathematical Society / Gresham College lecture.

    The transcript and downloadable versions of this event by Professor Peter Cameron are available from the Gresham College website:

    Gresham College has been giving free public lectures since 1597. This tradition continues today with all of our five or so public lectures a week being made available for free download from our website. There are over 1,500 lectures free to access or download from the website.

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    1. General Overview and the Development of Numbers


    (October 1, 2012) Keith Devlin gives an overview of the history of mathematics. He discusses how it has evolved over time and explores many of its practical applications in the world.

    Originally presented in the Stanford Continuing Studies Program.

    Stanford University:

    Stanford Continuing Studies Program:

    Stanford University Channel on YouTube:

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    Mathematics Gives You Wings


    October 23, 2010 - Professor Margot Gerritsen illustrates how mathematics and computer modeling influence the design of modern airplanes, yachts, trucks and cars. This lecture is offered as part of the Classes Without Quizzes series at Stanford's 2010 Reunion Homecoming.

    Margot Gerritsen, PhD, is an Associate Professor of Energy Resources Engineering, with expertise in mathematical and computational modeling of energy and fluid flow processes. She teaches courses in energy and the environment, computational mathematics and computing at Stanford University.

    Stanford University:

    Stanford Alumni Association:

    Department of Mathematics at Stanford:

    Margot Gerritsen:

    Stanford University Channel on YouTube:

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    Mersenne Primes and Perfect Numbers: A Love Story by Dan Garbowitz


    GRCC Adjunct Mathematics Instructor Dan Garbowitz talks on how prime numbers and perfect numbers have fascinated professional and amateur mathematicians for centuries, and much about them remains unknown. This talk will provides glimpse of the beauty and mysterious nature of these numbers and the relationships between them. Perfect numbers were known to the Greeks and have been studied since at least the 3rd century B.C. Marin Mersenne, a 17th century theologian and mathematician, developed a list of prime numbers, all with the same interesting form. Sometime later, Leonard Euler proved a fascinating statement that related the perfect numbers to the Mersenne Primes. During this seminar we will investigate this theorem in particular, and other number theory topics relating perfect numbers and Mersenne Primes.

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    RAMANUJAN: Letters from an Indian Clerk


    The extraordinary story of how in 1914 the self-taught maths genius SRINIVASA RAMANUJAN was brought from Madras to Trinity College, Cambridge, by the great English pure mathematician GH Hardy, who called their relationship 'the one truly romantic episode of my life'. A 1987 documentary for the Channel 4 'Equinox' science series. Uploaded from an old VHS tape.

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    Newtons Dark Secrets


    52:32 Centuries old manuscripts reveal the hidden pursuits of a scientific genius. Delving into his studies from the question of G*d, to his scientific discoveries, and his obsession with alchemy...
    Magic or Mainstream Science?
    An interview on Newton's alchemy with historian Bill Newman

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    Richard Feynman on Quantum Mechanics Part 1 - Photons Corpuscles of Light


    Richard Feynman on Quantum Mechanics

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    Vedic Mathematics: My Trip to India to Uncover the Truth - Alex Bellos


    One day on YouTube, Alex Bellos saw a video of an amazing mathematical trick. He wanted to know more about this 'Vedic Mathematics', so he got on a plane to India. This is a lecture about his journey that touched on mathematics, mysticism, Indian history, nationalism and culture.

    The transcript and downloadable versions of the full conference are available from the on the Gresham College website:

    Gresham College has been giving free public lectures since 1597. This tradition continues today with all of our five or so public lectures a week being made available for free download from our website.

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    How to trick your math teacher


    For more cool Tricks Visit my Website :

    This is an amazing magic trick with the numbers, no preparation needed, can be performed anywhere any time, is very effective but easy. I am loving this trick and I am sure you are gona love it too. Watch it !!!! have fun fooling your friends, By Tricklandia


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