slab symmetry
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Translational symmetry — In geometry, a translation slides an object by a vector a: Ta(p) = p + a.In physics and mathematics, continuous translational symmetry is the invariance of a system of equations under any translation. Discrete translational symmetry is invariance … Wikipedia
Voided biaxial slab — Voided biaxial slabs are reinforced concrete slabs in which voids reduce the amount of concrete.While concrete have been used for thousands of years, the use of reinforced concrete is a relative recent invention, usually attributed to Joseph… … Wikipedia
Western 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… … Universalium
architecture — /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… … Universalium
Crystallographic restriction theorem — The crystallographic restriction theorem in its basic form was based on the observation that the rotational symmetries of a crystal are usually limited to 2 fold, 3 fold, 4 fold, and 6 fold. However, quasicrystals can occur with other symmetries … Wikipedia
Crystal (software) — For other uses, see Crystal (disambiguation). CRYSTAL is a quantum chemistry ab initio program, designed primarily for calculations on crystals (3 dimensions), slabs (2 dimensions) and polymers (1 dimension) using translational symmetry, but it… … Wikipedia
Non-Radiative Dielectric waveguide (NRD) — Figure 1 Contents 1 Introduction 2 The dispersion relation in the NRD wave … Wikipedia
Equine conformation — [original research?] Parts of a horse Equine conformation evaluates the degree of correctness of a horse s bone structure, musculature, and its body proportions in relation to each other. Undesirable conformat … Wikipedia
interior design — 1. the design and coordination of the decorative elements of the interior of a house, apartment, office, or other structural space, including color schemes, fittings, furnishings, and sometimes architectural features. 2. the art, business, or… … Universalium
plate tectonics — plate tectonic, adj. Geol. a theory of global tectonics in which the lithosphere is divided into a number of crustal plates, each of which moves on the plastic asthenosphere more or less independently to collide with, slide under, or move past… … Universalium
Examples of groups — Some elementary examples of groups in mathematics are given on Group (mathematics). Further examples are listed here. Contents 1 Permutations of a set of three elements 2 The group of translations of the plane 3 The symme … Wikipedia
