Piecewise linear

Piecewise linear may refer to:
 * Piecewise linear curve, a connected sequence of line segments
 * Piecewise linear function, a function whose domain can be decomposed into pieces on which the function is linear
 * Piecewise linear manifold, a topological space formed by gluing together flat spaces
 * Piecewise linear homeomorphism, a topological equivalence between two piecewise linear manifolds
 * Piecewise linear cobordism, a cohomology theory
 * Piecewise linear continuation, a method for approximating functions by piecewise linear functions