semi-symmetry
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Semi-symmetric graph — In mathematics, a semi symmetric graph is an undirected graph that is edge transitive and regular, but not vertex transitive.In other words, a graph is semi symmetric if each vertex has the same number of incident edges, and there is a symmetry… … Wikipedia
Semi-minor axis — The semi minor axis of an ellipse In geometry, the semi minor axis (also semiminor axis) is a line segment associated with most conic sections (that is, with ellipses and hyperbolas). One end of the segment is the center of the conic section, and … Wikipedia
Semi-rigid molecule — A semi rigid molecule is a molecule which has a potential energy surface with a well defined minimum corresponding to a stable structure of the molecule. The only (quantum mechanical) motions that a semi rigid molecule makes are (small) internal… … Wikipedia
Semi-Open Game — A Semi Open Game is a chess opening in which White plays 1.e4 and Black breaks symmetry immediately by replying with a move other than 1...e5. The Semi Open Games are also called Single King Pawn Games, and are the complement of the Open Games or … Wikipedia
Octahedral 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… … Wikipedia
Tetrahedral 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 … Wikipedia
Molécule semi-rigide — Une molécule semi rigide est une molécule dont la surface d énergie potentielle avec un minimum bien défini correspondant à une structure stable de la molécule. Les seuls mouvements (quantiques) qu une molécule semi rigide effectue sont des… … Wikipédia en Français
Exchange symmetry — is derived from a fundamental postulate of quantum statistics, which states that no observable physical quantity should change after exchanging two identical particles. It states that because all observables are proportional to left| psi ight|^2… … Wikipedia
List of mathematics articles (S) — NOTOC S S duality S matrix S plane S transform S unit S.O.S. Mathematics SA subgroup Saccheri quadrilateral Sacks spiral Sacred geometry Saddle node bifurcation Saddle point Saddle surface Sadleirian Professor of Pure Mathematics Safe prime Safe… … Wikipedia
Polyhedron — Polyhedra redirects here. For the relational database system, see Polyhedra DBMS. For the game magazine, see Polyhedron (magazine). For the scientific journal, see Polyhedron (journal). Some Polyhedra Dodecahedron (Regular polyhedron) … Wikipedia
Hexicated 7-cube — Orthogonal projections in BC4 Coxeter plane 7 cube … Wikipedia
