Penrose Stairway
An Impossible Figure (also called the Schroeder Stairs) in which a stairway in the shape of a square appearsto circulate indefinitely while still possessing normal steps. The Dutch artist M. C. Escher included Penrose stairways inmany of his mind-bending illustrations.
See also Impossible Figure
References
Hofstadter, D. R. Gödel, Escher, Bach: An Eternal Golden Braid. New York: Vintage Books, p. 15, 1989. Jablan, S. ``Impossible Figures.'' http://members.tripod.com/~modularity/impos.htm. Pappas, T. ``Optical Illusions and Computer Graphics.'' The Joy of Mathematics. San Carlos, CA: Wide World Publ./Tetra, p. 5, 1989. Robinson, J. O. and Wilson, J. A. ``The Impossible Colonnade and Other Variations of a Well-Known Figure.'' Brit. J. Psych. 64, 363-365, 1973.
- Johnson's Theorem
- Join (Graph)
- Join (Spaces)
- Joint Distribution Function
- Joint Probability Density Function
- Joint Theorem
- Jonah Formula
- Jones Polynomial
- Jonquière's Function
- Jordan Algebra
- Jordan Curve
- Jordan Curve Theorem
- Jordan Decomposition Theorem
- Jordan-Hölder Theorem
- Jordan Measure
- Jordan Polygon
- Jordan's Inequality
- Jordan's Lemma
- Josephus Problem
- Jug
- Jugendtraum
- Juggling
- Julia Fractal
- Julia Set
- Jump