This article is from an old version of Mathigon and will be updated soon.

Article Image, Video and Audio Credits

Article Icons

Introduction: Created by Digital Visions Queenstown
Dimensions and Distortions: Aurélien Alvarez, Étienne Ghys and Jos Leys via IMAGINARY
Real, Irrational, Imaginary: created by Paul Schubert
Optimisation: based on images © Paul Nylander

Dimensions and Distortions

Polar Bear: Alan Wilson, freely available under a CC BY-SA 3.0 licence on Wikimedia
Cooling Tower: Alan Murray-Rust, published under a CC BY-SA 2.0 licence on Wikimedia
Corals: Toby Hudson, published under a CC BY-SA 3.0 licence on Wikimedia
Vase: Public Domain, acquired by Henry Waltersin 1911 (Wikipedia page)
Circle Limit III: © M. C. Escher Foundation, see Wikipedia for fair use rationale
Teacup and Torus: Public Domain, created by Wikipedia user LucasVB
Geometric Diagrams: JSXGraph, LGPL Licence, developed at the University of Bayreuth

Infinity

Frog Legs Rat: Wikipedia user Adam Cuerden and Jujutacular, published under a CC BY-SA 3.0 licence on Wikimedia
Miss Marple Video Extract: © 1964 and 1989 Turner Entertainment Co. See below for Fair use policies.
The Hilbert Logo: loosely based on the Hilton Hotels & Resorts logo

Axioms and Proof

Towers of Hanoi Game: Based on code by Stoyan Rachev

Game Theory

John Nash Photo: Sandstein, published under a CC BY-SA 3.0 licence on Wikimedia
Stadium: Stock.xchng user rafbalance

Fair Use

Some videos on this website include stills and short clips from motion pictures, which belong to the respective movie studios. Based on the AUSOC Code of Best Practices, this qualifies as ‘Fair Use’ under US law, since we are “quoting in order to recombine elements to make a new work that depends for its meaning on [often unlikely] relationships between the elements”.