base-centered packing
1Centered hexagonal number — A centered hexagonal number, or hex number, is a centered figurate number that represents a hexagon with a dot in the center and all other dots surrounding the center dot in a hexagonal lattice. The n th centered hexagonal number is given by the… …
2Close-packing of spheres — hcp and fcc close packing of spheres In geometry, close packing of spheres is a dense arrangement of equal spheres in an infinite, regular arrangement (or lattice). Carl Friedrich Gauss proved that the highest average density – that is, the… …
3Crystal structure — In mineralogy and crystallography, crystal structure is a unique arrangement of atoms or molecules in a crystalline liquid or solid. A crystal structure is composed of a pattern, a set of atoms arranged in a particular way, and a lattice… …
4List of mathematics articles (C) — NOTOC C C closed subgroup C minimal theory C normal subgroup C number C semiring C space C symmetry C* algebra C0 semigroup CA group Cabal (set theory) Cabibbo Kobayashi Maskawa matrix Cabinet projection Cable knot Cabri Geometry Cabtaxi number… …
5Neighborhoods of Oklahoma City — This article is about the neighborhoods in Oklahoma City. For more general information, see Oklahoma City. The City of Oklahoma City uses Special Zoning Districts as a tool to maintain the character of many neighborhood communities. Contents 1… …
6Chiapas — Estado Libre y Soberano de Chiapas   State   …
7New Deal — This article is about the 1930s economic programs of the United States. For other uses, see New Deal (disambiguation). Top left: The Tennessee Valley Authority, part of the New Deal, being signed into law in 1933. Top right: Franklin Delano… …
8Banana — For other uses, see Banana (disambiguation). Banana …
9Air Force reports on the Roswell UFO incident — The two Air Force reports on the Roswell UFO incident, published in 1994/5 and 1997, form the basis for much of the skeptical explanation for the 1947 incident, the purported recovery of aliens and their craft from the vicinity of Roswell, New… …
10Argentina — /ahr jeuhn tee neuh/; Sp. /ahrdd hen tee nah/, n. a republic in S South America. 35,797,536; 1,084,120 sq. mi. (2,807,870 sq. km). Cap.: Buenos Aires. Also called the Argentine. Official name, Argentine Republic. * * * Argentina Introduction… …
