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joining points

См. также в других словарях:

  • Catch points — and trap points are types of turnout which act as railway safety devices. Both work by guiding railway carriages and trucks from a dangerous route onto a separate, safer track. Catch points are used to vehicles which are out of control on steep… …   Wikipedia

  • Conjugate points — In differential geometry, conjugate points are, roughly, points that can almost be joined by a 1 parameter family of geodesics. For example, on a sphere, the north pole and south pole are connected by any meridian. Definition Suppose p and q are… …   Wikipedia

  • Casson handle — In 4 dimensional topology, a branch of mathematics, a Casson handle is a 4 dimensional topological 2 handle constructed by an infinite procedure. They are named for Andrew Casson, who introduced them in about 1973. They were originally called… …   Wikipedia

  • Contour line — This article is about lines of equal value in maps and diagrams. For more meanings of the word contour , see Contour (disambiguation). The bottom part of the diagram shows some contour lines with a straight line running through the location of… …   Wikipedia

  • Projective plane — See real projective plane and complex projective plane, for the cases met as manifolds of respective dimension 2 and 4 In mathematics, a projective plane has two possible definitions, one of them coming from linear algebra, and another (which is… …   Wikipedia

  • Territorial waters — Schematic map of maritime zones. Territorial waters, or a territorial sea, as defined by the 1982 United Nations Convention on the Law of the Sea,[1] is a belt of coastal waters extending at most 12 nautical miles (22 km; 14 mi) from… …   Wikipedia

  • contour — noun 1》 an outline, especially one representing or bounding the shape or form of something.     ↘(also contour line) a line on a map joining points of equal height above or below sea level.     ↘a line joining points on a diagram at which some… …   English new terms dictionary

  • Path (topology) — The points traced by a path from A to B in R². However, different paths can trace the same set of points. In mathematics, a path in a topological space X is a continuous map f from the unit interval I = [0,1] to X f : I → X. The initial… …   Wikipedia

  • Geographic coordinate system — Map of Earth showing lines of latitude (horizontally) and longitude (vertically), Eckert VI projection; large version (pdf, 3.12MB) …   Wikipedia

  • Seifert–van Kampen theorem — In mathematics, the Seifert–van Kampen theorem of algebraic topology, sometimes just called van Kampen s theorem, expresses the structure of the fundamental group of a topological space X, in terms of the fundamental groups of two open, path… …   Wikipedia

  • isochrone — noun an isogram connecting points at which something occurs or arrives at the same time • Hypernyms: ↑isogram, ↑isopleth, ↑isarithm * * * ˈ ̷ ̷ ̷ ̷ at iso +ˌkrōn noun ( s) Etymology …   Useful english dictionary

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