train track
train track
English Definitions:
train track (Noun)
railroad track
train track (Noun)
A set of curves lying in a surface, meeting one another at their respective endpoints in a specific way that resembles railroad tracks
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 do not touch each other. ⁕At each switch, three curves meet with the same tangent line, with two curves entering from one direction and one from the other. The main application of train tracks in mathematics is to study laminations of surfaces, that is, partitions of closed subsets of surfaces into unions of smooth curves. Train tracks have also been used in graph drawing.
train track
A railway track (British English and UIC terminology) or railroad track (American English), also known as a train track, permanent way or simply track, is the structure on a railway or railroad consisting of the rails, fasteners, railroad ties (sleepers, British English) and ballast (or slab track), plus the underlying subgrade. It enables trains to move by providing a dependable surface for their wheels to roll upon. Early tracks were constructed with wooden or cast iron rails, and wooden or stone sleepers; since the 1870s, rails have almost universally been made from steel.
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"train track." Kamus.net. STANDS4 LLC, 2024. Web. 26 Apr. 2024. <https://www.kamus.net/english/train+track>.
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