Geometric topology | 4-manifolds

Fake 4-ball

In mathematics, a fake 4-ball is a compact contractible topological 4-manifold. Michael Freedman proved that every three-dimensional homology sphere bounds a fake 4-ball. His construction involves the use of Casson handles and so does not work in the smooth category. (Wikipedia).

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What is the 4th Dimension REALLY? - 4D Golf Devlog #2

A more practical explanation for those interested in exploring 4D spaces. For those not already familiar with basic 4D concepts, here's some videos I can recommend: "Visualizing 4D Geometry" https://www.youtube.com/watch?v=4URVJ3D8e8k "The things you'll find in higher dimensions" https:/

From playlist 4D Golf

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4th dimension 'n stuff -- Day 5

alright, 4th dimension visualized! -- Watch live at https://www.twitch.tv/simuleios

From playlist 4d visualization

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4D Golf - Teaser Trailer

Wishlist on Steam: https://store.steampowered.com/app/2147950 Official announcement that I'm working on a new game: 4D Golf. No release date is announced yet, but devlogs and more details are coming soon. Support me and innovative projects like these! Patreon: https://www.patreon.com/co

From playlist 4D Golf

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How to Animate in Cinema 4D (Not Real)

In this tutorial I'm going to show you how to animate a realistic ball bounce.

From playlist Fake Cinema 4D Tutorials

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4th dimension 'n stuff -- Day 4

alright, figured out some of this projection nonsense. Not all of it, but some of it... -- Watch live at https://www.twitch.tv/simuleios

From playlist 4d visualization

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Cracking the 4D Rubik's Cube with simple 3D tricks

This video is an introduction to the mysterious 4D Rubik's cube. Here my main focus is on revealing some ingenious tricks that will allow you to design your own algorithms for this crazy puzzle based on what you already know about the normal Rubik's cube. Part 2 of this video is a hands

From playlist Recent videos

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I visualized 4D shapes #SoME2

#some2 Articles about computer graphics: https://iquilezles.org/ Ray marching tutorials: https://www.youtube.com/c/TheArtofCodeIsCool In this video I am trying to construct a visualization of 4D shapes

From playlist Summer of Math Exposition 2 videos

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Spherical 4R mechanism 2c

Modification of "Spherical 4R mechanism 2a" and "Spherical 4R mechanism 2b". Because it is a combination of two spherical 4R joints, angles between line connecting two joint centers and the shaft axles must be set equal to each other in order to get constant velocity.

From playlist Mechanisms

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How to Model a Cube in Cinema 4D (Not Real)

With this extensive tutorial, I will show you how to model a cube.

From playlist Fake Cinema 4D Tutorials

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Experiments Right or Wrong - A. Martinez - 4/26/19

On April 26-27 2019, the Division of Humanities & Social Sciences at Caltech hosted a conference in honor of Jed Z. Buchwald, “Looking Back as We Move Forward: The Past, Present, and Future of the History of Science.” This event was sponsored by the Division of the Humanities & Social Sci

From playlist Looking Back as We Move Forward - A Conference in Honor of Jed Z. Buchwald - 4/26-27/2019

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5 Unbelievable Facts: FAKE? or PHYSICS?

Test yourself with our April Fools’ Day game: Fake or physics? SUBSCRIBE: http://youtube.com/whatthephysics?sub LINKS AND DETAILS: More details: #1. Speed of sound: Unlike light, sound needs a medium to travel through, and its speed depends on characteristics of that medium like density a

From playlist What the Physics?!

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2048 strategy and maths

James Grime's youtube channel is: http://www.youtube.com/user/singingbanana You can play 2048 here: http://gabrielecirulli.github.io/2048/ You can watch it being played by AI here: http://ov3y.github.io/2048-AI/ You can play the hard version here: http://sztupy.github.io/2048-Hard/ Dr

From playlist My Maths Videos

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Programming Balls #2 Circles V Edges Collisions C++

Better Balls! This video continues looking a a circle physics based engine, and implements a more accurate method for tracking time during the simulation, and implements arbitrary edge objects that can be used to displace and deflect balls. All using the olcConsoleGameEngine at the command

From playlist Interesting Programming

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Domingo Toledo

https://www.math.ias.edu/files/media/agenda.pdf More videos on http://video.ias.edu

From playlist Mathematics

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Frédéric Mangolte: Algebraic models of the line in the real affine plane

Abstract: We study the following real version of the famous Abhyankar-Moh Theorem: Which real rational map from the affine line to the affine plane, whose real part is a non-singular real closed embedding of ℝ into ℝ^2, is equivalent, up to a birational diffeomorphism of the plane, to the

From playlist Algebraic and Complex Geometry

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Enable Filmmaker Mode - This is Only a Test 533 - 1/9/20

Big week for technology news, and we recap the most interesting and curious announcements from this year's CES. From Samsung making rolling robot assistants to Sony designing a concept car, we break down the weird and wired. Plus, a slew of new stuff from 1UpArcade, lots of science, and so

From playlist This Is Only a Test

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How To Develop 2D Adventure Platformer Game With Game Maker | Session 05 | #gamedev

Don’t forget to subscribe! In this project series, you will learn to develop a 2D adventure platformer game with Game Maker Studio. This project series will take you through each step of the process to develop a 2D Adventure game. You will get your grip on the Game Make Studio and in the

From playlist Develop 2D Adventure Platformer Game With Game Maker

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Pawn Stars: Fake Wells Fargo Strongbox (Season 5) | History

Rick buys authentic-looking Wells Fargo artifacts - including handcuffs and a ball and chain - but may be left with a negative balance in this clip from "Corey's Big Play". #PawnStars Subscribe for more from Pawn Stars: http://po.st/SubscribeToPawnStars Watch more Pawn Stars on YouTube in

From playlist Pawn Stars: Blast From Pawns Past (Seasons 1-13) | History

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​Donald Cartwright : ​Construction of lattices defining fake projective planes - lecture 4

Recording during the meeting "Ball Quotient Surfaces and Lattices " the February 26, 2019 at the Centre International de Rencontres Mathématiques (Marseille, France) Filmmaker: Guillaume Hennenfent Find this video and other talks given by worldwide mathematicians on CIRM's Audiovisual Ma

From playlist Algebraic and Complex Geometry

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How to Model and Texture Wrap a Sphere (Not Real)

In this extensive tutorial I'm going to show you how to model and texture wrap a sphere.

From playlist Fake Cinema 4D Tutorials

Related pages

Casson handle | Homology sphere | Mathematics | Contractible space | 4-manifold