fundamental triangle

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• Triangle wave — A triangle wave is a non sinusoidal waveform named for its triangular shape.Like a square wave, the triangle wave contains only odd harmonics. However, the higher harmonics roll off much faster than in a square wave (proportional to the inverse… …   Wikipedia

• Fundamental group — In mathematics, the fundamental group is one of the basic concepts of algebraic topology. Associated with every point of a topological space there is a fundamental group that conveys information about the 1 dimensional structure of the portion of …   Wikipedia

• triangle — triangled, adj. /truy ang geuhl/, n. 1. a closed plane figure having three sides and three angles. 2. a flat triangular piece, usually of plastic, with straight edges, used in connection with a T square for drawing perpendicular lines, geometric… …   Universalium

• Schwarz triangle — In geometry, a Schwarz triangle, named after Hermann Schwarz is a spherical triangle that can be used to tile a sphere, possibly overlapping, through reflections in its edges. They were classified in (Schwarz 1873). These can be defined more… …   Wikipedia

• Empty triangle — In the game of Go, the empty triangle is the most fundamental example of the concept of bad shape.It consists of a formation (or subformation) of three stones of one colour, occupying a compact arrangement in a 2×2 square, like the triangled… …   Wikipedia

• All-Star Triangle Bowl — is a bowling alley located in Orangeburg, South Carolina, United States. The lanes are a historic fixture of the community. The original owner was Harry K. Floyd. All Star Triangle Bowl is most known for its fundamental role in the Orangeburg… …   Wikipedia

• Hurwitz's automorphisms theorem — In mathematics, Hurwitz s automorphisms theorem bounds the group of automorphisms, via orientation preserving conformal mappings, of a compact Riemann surface of genus g > 1, telling us that the order of the group of such automorphisms is bounded …   Wikipedia

• Uniform polyhedron — A uniform polyhedron is a polyhedron which has regular polygons as faces and is transitive on its vertices (i.e. there is an isometry mapping any vertex onto any other). It follows that all vertices are congruent, and the polyhedron has a high… …   Wikipedia

• ГОСТ 11708-82: Основные нормы взаимозаменяемости. Резьба. Термины и определения — Терминология ГОСТ 11708 82: Основные нормы взаимозаменяемости. Резьба. Термины и определения оригинал документа: 67. Базовая плоскость конической резьбы Базовая плоскость D. Basisebene des kegligen Gewindes Плоскость, перпендикулярная к оси… …   Словарь-справочник терминов нормативно-технической документации

• Wythoff symbol — In geometry, a Wythoff symbol is a short hand notation, created by mathematician Willem Abraham Wythoff, for naming the regular and semiregular polyhedra using a kaleidoscopic construction, by representing them as tilings on the surface of a… …   Wikipedia

• высота исходного треугольника резьбы — (H) Расстояние между вершиной и основанием исходного треугольника резьбы в направлении, перпендикулярном к оси резьбы. [ГОСТ 11708 82 (СТ СЭВ 2631 80)] Тематики нормы взаимозаменяемости Обобщающие термины основные элементы и параметры резьбы EN… …   Справочник технического переводчика