index rotation
21Venus — This article is about the planet. For other uses, see Venus (disambiguation). Venus   …
22Spinor — In mathematics and physics, in particular in the theory of the orthogonal groups (such as the rotation or the Lorentz groups), spinors are elements of a complex vector space introduced to expand the notion of spatial vector. Unlike tensors, the… …
23Quaternion — Quaternions, in mathematics, are a non commutative extension of complex numbers. They were first described by the Irish mathematician Sir William Rowan Hamilton in 1843 and applied to mechanics in three dimensional space. They find uses in both… …
24Mercury (planet) — Mercury  ☿ …
25Star — For other uses, see Star (disambiguation) …
26Wallpaper group — A wallpaper group (or plane symmetry group or plane crystallographic group) is a mathematical classification of a two dimensional repetitive pattern, based on the symmetries in the pattern. Such patterns occur frequently in architecture and… …
27Árbol biselado — Un Árbol biselado o Árbol Splay es un Árbol binario de búsqueda auto balanceable, con la propiedad adicional de que a los elementos accedidos recientemente se accederá más rápidamente en accesos posteriores. Realiza operaciones básicas como… …
28Tropical cyclone — Hurricane redirects here. For other uses, see Hurricane (disambiguation). Hurricane Isabel (2003) as seen from orbit during Expedition 7 of the International Space Station. The eye, eyewall and surrounding rainbands that are characteristics of… …
29eye, human — ▪ anatomy Introduction specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit The eye is protected from mechanical injury… …
30Earth — This article is about the planet. For other uses, see Earth (disambiguation). Earth   …
