piecewise linear

== English == === Etymology === From piecewise (adverb) + linear. === Adjective === 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 ==== Synonyms ==== PL ==== Translations ====