me. It was obtained by a democratic process in my course of 1976–77. An orbifold is something with many folds; unfortunately, the word "manifold" already...
78 KB (10,240 words) - 18:02, 26 July 2024
In geometry, orbifold notation (or orbifold signature) is a system, invented by the mathematician William Thurston and promoted by John Conway, for representing...
19 KB (1,192 words) - 11:34, 2 August 2024
Coxeter group [7,3], orbifold (*732) contains these uniform tilings: The (8 3 2) triangle group, Coxeter group [8,3], orbifold (*832) contains these...
30 KB (1,586 words) - 13:40, 31 July 2024
Wallpaper group (section Orbifold notation)
wallpaper group; it is called p4m in the IUCr notation and *442 in the orbifold notation. Example C has a different wallpaper group, called p4g or 4*2...
65 KB (6,483 words) - 22:37, 19 August 2024
S 1 {\displaystyle S^{1}} -bundle (circle bundle) over a 2-dimensional orbifold. Many 3-manifolds are Seifert fiber spaces, and they account for all compact...
19 KB (3,040 words) - 11:33, 7 November 2023
In differential geometry, the Euler characteristic of an orbifold, or orbifold Euler characteristic, is a generalization of the topological Euler characteristic...
3 KB (370 words) - 01:22, 25 June 2024
William Thurston (section Orbifold theorem)
respectively. In his work on hyperbolic Dehn surgery, Thurston realized that orbifold structures naturally arose. Such structures had been studied prior to Thurston...
22 KB (2,166 words) - 07:51, 28 July 2024
Stacky curve (redirect from Orbifold curve)
Stacky curves are closely related to 1-dimensional orbifolds and therefore sometimes called orbifold curves or orbicurves. A stacky curve X {\displaystyle...
5 KB (497 words) - 03:00, 1 March 2024
point groups, International Tables for Crystallography space group number, orbifold, type, and space groups are listed in the table below. There are a total...
3 KB (262 words) - 13:43, 7 July 2024
group in Schoenflies notation, Hermann–Mauguin (international) notation, orbifold notation, and Coxeter notation, type descriptors, mineral examples, and...
6 KB (480 words) - 14:42, 12 December 2023