piecewise linear

See also: piecewiselinear and piecewise-linear

English

Etymology tree

English piece

Proto-Indo-European *weyd-

Proto-Indo-European *weyd-s-ós

Proto-Germanic *wīsaz

Proto-Germanic *-wīsaz

Proto-West Germanic *-wīs

Old English -wīs

Middle English -wis

English -wise

English piecewise

English linear

English piecewise linear

From piecewise (adverb) + linear.

piecewise linear (not comparable)

(mathematics) Equal to a sum of finitely many linear functions, each defined on a convex polytope: said of functions between vector spaces
(topology) Having a defining atlas such that there is a piecewise linear homeomorphism between any pair of intersecting atlas charts: said of manifolds

mathematics: equal to a sum of finitely many linear functions