abstract vertex
61Tetrahedral symmetry — A regular tetrahedron has 12 rotational (or orientation preserving) symmetries, and a total of 24 symmetries including transformations that combine a reflection and a rotation.The group of symmetries that includes reflections is isomorphic to S 4 …
62Stuart Schreiber — Stuart L. Schreiber (b. February 6, 1956) is a scientist at Harvard University and the Broad Institute of Harvard and MIT. He has been a pioneer in a field of research named chemical biology for over 20 years. His name is closely associated with… …
63Topos — For topoi in literary theory, see Literary topos. For topoi in rhetorical invention, see Inventio. In mathematics, a topos (plural topoi or toposes ) is a type of category that behaves like the category of sheaves of sets on a topological space.… …
64Quantum group — In mathematics and theoretical physics, quantum groups are certain noncommutative algebras that first appeared in the theory of quantum integrable systems, and which were then formalized by Vladimir Drinfel d and Michio Jimbo. There is no single …
65Duality (mathematics) — In mathematics, a duality, generally speaking, translates concepts, theorems or mathematical structures into other concepts, theorems or structures, in a one to one fashion, often (but not always) by means of an involution operation: if the dual… …
66Octahedral symmetry — The cube is the most common shape with octahedral symmetry A regular octahedron has 24 rotational (or orientation preserving) symmetries, and a symmetry order of 48 including transformations that combine a reflection and a rotation. A cube has… …
67Direct3D — Saltar a navegación, búsqueda Direct3D es parte de DirectX, una API propiedad de Microsoft disponible tanto en los sistemas Windows de 32 y 64 bits, como para sus consolas Xbox y Xbox 360 para la programación de gráficos 3D. El objetivo de esta… …
68Composite data type — In computer science, a composite data type is any data type which can be constructed in a program using its programming language s primitive data types and other composite types. The act of constructing a composite type is known as composition.… …
69Buck 65 — Infobox musical artist Name = Buck 65 Img capt = Buck 65 in Sweden at Storsjöyran. Img size = Background = solo singer Birth name = Richard Terfry Alias = Stinkin Rich, Johnny Rockwell, DJ Critical, Jesus Murphy, Hilario, Uncle Climax, Ricardo… …
70Sperner family — In combinatorics, a Sperner family (or Sperner system), named in honor of Emanuel Sperner, is a set system (F, E) in which no element is contained in another. Formally, If X, Y are in F and X ≠ Y, then X is not contained in Y and Y is not… …
