- train track
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b) A set of curves lying in a surface, meeting one another at their respective endpoints in a specific way that resembles railroad tracks
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train track
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Train track — In the mathematical area of topology, a train track is a family of curves embedded on a surface, meeting the following conditions: #The curves meet at a finite set of vertices called switches . #Away from the switches, the curves are smooth and… … Wikipedia
Track (rail transport) — Permanent way redirects here. For other uses, see Permanent way (disambiguation). Twin rail tracks in a wooded area … Wikipedia
track — track1 [ træk ] noun *** ▸ 1 rough path/road ▸ 2 what train moves along ▸ 3 running/racing course ▸ 4 part on which something moves ▸ 5 direction or way ▸ 6 mark ▸ 7 recorded piece of music ▸ + PHRASES 1. ) count a path or road with a rough… … Usage of the words and phrases in modern English
track — 1. noun /træk/ a) A mark left by something that has passed along; as, the track, or wake, of a ship; the track of a meteor; the track of a sled or a wheel. Im going to try out for track next week. b) A mark or impression left by the foot, either… … Wiktionary
Train order operation — is a system by which the railroads of North America conveyed operating instructions before the days of centralized traffic control, direct traffic control, and the use of track warrants conveyed by radio.Train order operation still exists on a… … Wikipedia
Track warrant — Track warrants are systematized permissions used on some rail lines to authorize use of the main line instead of signals. Train crews receive track warrants by radio, phone, or electronic transmission from a dispatcher. Track warrants are issued… … Wikipedia
Train shunting puzzle — Train shunting puzzles, also often called railway shunting puzzles or railroad switching puzzles, are a type of transport puzzle.Shunting puzzles usually consist of a specific track layout, a set of initial conditions (typically the starting… … Wikipedia
Train speed optimization — Train speed optimization, also known as Zuglaufoptimierung, is a system that reduces the need for trains to brake and accelerate, resulting in smoother and more efficient operation.While train speed optimization needs some technical… … Wikipedia
Train routes in the Netherlands — Train routes by timetable numberTrain routes in the Netherlands are identified by numbers. The routes are listed here using the official abbreviations for the station names, see list of stations, with their official abbreviations, and in the… … Wikipedia
Train of Thought (Dream Theater album) — Train of Thought Cover art by Jerry Uelsmann Studio album by Dream Theater … Wikipedia
