symmetry class
81physics — /fiz iks/, n. (used with a sing. v.) the science that deals with matter, energy, motion, and force. [1580 90; see PHYSIC, ICS] * * * I Science that deals with the structure of matter and the interactions between the fundamental constituents of… …
82Graph coloring — A proper vertex coloring of the Petersen graph with 3 colors, the minimum number possible. In graph theory, graph coloring is a special case of graph labeling; it is an assignment of labels traditionally called colors to elements of a graph… …
83Spidron — This article discusses the plane geometric figure; for the science fiction character see Spidron (character). In geometry, a spidron is a continuous flat geometric figure composed entirely of triangles, where, for every pair of joining triangles …
84Western architecture — Introduction history of Western architecture from prehistoric Mediterranean cultures to the present. The history of Western architecture is marked by a series of new solutions to structural problems. During the period from the… …
85Path integral formulation — This article is about a formulation of quantum mechanics. For integrals along a path, also known as line or contour integrals, see line integral. The path integral formulation of quantum mechanics is a description of quantum theory which… …
86architecture — /ahr ki tek cheuhr/, n. 1. the profession of designing buildings, open areas, communities, and other artificial constructions and environments, usually with some regard to aesthetic effect. Architecture often includes design or selection of… …
87galaxy — /gal euhk see/, n., pl. galaxies. 1. Astron. a. a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space. b. (usually cap.) See Milky Way. 2. any large and brilliant or impressive… …
88Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
89Nobel Prize winners by name — ▪ Table Nobel Prize winners by name A B C D E F G H I J K L M N O P Q R S T U V W Y Z A name year category country* achievement literary area Abrikosov, Alexey A. 2003 physics U.S. discoveries… …
90Nobel Prize winners by year — ▪ Table Nobel Prize winners by year 1901–10 1941–50 1981–90 1911–20 1951–60 1991–2000 1921–30 1961–70 2001–08 1931–40 1971–80 1901–10 year category name country* achievement literary area 1901 chemistry Henricus van t (Hoff, Jacobus Henricus van… …
