Undecidable problems

Semi-Thue problem

No description. (Wikipedia).

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Equilateral Triangle + Semicircle Action!

How to prove? GeoGebra Resource: https://www.geogebra.org/m/FeVmDp27

From playlist Geometry: Challenge Problems

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The Infinite Game of Chess (with Outray Chess)

An infinite game of chess with the Thue-Morse sequence. To avoid an infinite game of chess there was a rule that declared that a game would end if any sequence of moves were repeated three times in a row. However Dutch mathematician Max Euwe showed that the Thue-Morse sequence can define

From playlist My Maths Videos

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Regular Polygon Phenomena!

GeoGebra Link: https://www.geogebra.org/m/ketkkfuj

From playlist Geometry: Challenge Problems

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Regular Polygon Phenomena 2!

GeoGebra Link: https://www.geogebra.org/m/yvqwqk6h

From playlist Geometry: Challenge Problems

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Trig identities - What are they?

► My Trigonometry course: https://www.kristakingmath.com/trigonometry-course Trig identities are pretty tough for most people, because 1) there are so many of them, and 2) they’re hard to remember, and 3) it’s tough to recognize when you’re supposed to use them! But don’t worry, because

From playlist Trigonometry

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The Thue-Morse Sequence (with visualizations)

In this video, we introduce the Prouhet-Thue-Morse sequence, which is a binary sequence. We discuss three methods to construct the sequence and then investigate some of the sequence's properties (including why it is the "fair sharing" sequence, the overlap-free property, its connection to

From playlist Fractals

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Arne Martin Aurlien: Implement an Esoteric Programming Language for Fun | JSConf EU 2014

Inside most of us there’s a befunge programmer who wants to come out. When doing day-to-day “serious” programming it is usually a good idea to keep them as firmly locked up as possible. Let’s ignore that instinct for a little while. In this talk I’ll try to convince you why you should try

From playlist JSConf EU 2014

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Arul Shankar, Ordering elliptic curves by conductor

VaNTAGe seminar, on Oct 27, 2020 License: CC-BY-NC-SA. Closed captions provided by Rachana Madhukara.

From playlist Rational points on elliptic curves

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Koch Curve from Thue-Morse Turtle Graphics

This video shows the first 65536 steps of the turtle graphics construction of the Koch curve using the Thue-Morse sequence. To learn more about some of the amazing properties of Thue-Morse sequence, see this longer video: https://youtu.be/yqEIhdnfJxE.. #numbertheory #turtlegraphics ______

From playlist Fractals

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Word Problems with trigonometry and triangles

👉 Learn how to solve the word problems with trigonometry. Word problems involving angles, including but not limited to: bearings, angle of elevations and depressions, triangles problems etc are solved using trigonometry. To be able to solve these problems it is important that you have a gr

From playlist Evaluate Inverse Trigonometric Functions

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Word Problems with trigonometry and triangles

👉 Learn how to solve the word problems with trigonometry. Word problems involving angles, including but not limited to: bearings, angle of elevations and depressions, triangles problems etc are solved using trigonometry. To be able to solve these problems it is important that you have a gr

From playlist Evaluate Inverse Trigonometric Functions

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Word Problems with trigonometry and triangles

👉 Learn how to solve the word problems with trigonometry. Word problems involving angles, including but not limited to: bearings, angle of elevations and depressions, triangles problems etc are solved using trigonometry. To be able to solve these problems it is important that you have a gr

From playlist Evaluate Inverse Trigonometric Functions

Video thumbnail

Word Problems with trigonometry and triangles

👉 Learn how to solve the word problems with trigonometry. Word problems involving angles, including but not limited to: bearings, angle of elevations and depressions, triangles problems etc are solved using trigonometry. To be able to solve these problems it is important that you have a gr

From playlist Evaluate Inverse Trigonometric Functions

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Hugh Montgomery: Moments of a Thue-Morse generating function

Find this video and other talks given by worldwide mathematicians on CIRM's Audiovisual Mathematics Library: http://library.cirm-math.fr. And discover all its functionalities: - Chapter markers and keywords to watch the parts of your choice in the video - Videos enriched with abstracts, b

From playlist Number Theory

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Volker Diekert: Recognizable languages are Church-Rosser congruential

Find this video and other talks given by worldwide mathematicians on CIRM's Audiovisual Mathematics Library: http://library.cirm-math.fr. And discover all its functionalities: - Chapter markers and keywords to watch the parts of your choice in the video - Videos enriched with abstracts, b

From playlist SPECIAL 7th European congress of Mathematics Berlin 2016.

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Michael Drmota: Automatic sequences along squares and primes

Find this video and other talks given by worldwide mathematicians on CIRM's Audiovisual Mathematics Library: http://library.cirm-math.fr. And discover all its functionalities: - Chapter markers and keywords to watch the parts of your choice in the video - Videos enriched with abstracts, b

From playlist Number Theory

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#MegaFavNumbers: 258,474,216

#MegaFavNumbers: 258,474,216. See https://www.youtube.com/watch?v=R2eQVqdUQLI&list=PLar4u0v66vIodqt3KSZPsYyuULD5meoAo. Further reading: The OEIS for the sequence: https://oeis.org/A001219 Another relevant sequence: https://oeis.org/A097571 S. P. Mohanty, Which triangular numbers are prod

From playlist MegaFavNumbers

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Walking the Dragon and Koch Curves with a Turtle (131072 steps each!)

In this video, we describe two how to draw two amazing curves - the Dragon curve and the Koch curve - using the simple process of Turtle graphics. For both curves, we draw 131072 line segments (this is 2 to the 17th power). It is amazing that such a simple process can draw these complex cu

From playlist Fractals

Related pages

Semi-Thue system