piecewise

In mathematics, a piecewise-defined function (also called a piecewise function) is a function which is defined by multiple subfunctions, each subfunction applying to a certain interval of the main function's domain (a subdomain). Piecewise is actually a way of expressing the function, rather than a characteristic of the function itself, but with additional qualification, it can describe the nature of the function.

Canonical piecewise-linear analysis
Canonical piecewise-linear modeling
Monotone Piecewise Cubic Interpolation
Canonical piecewise-linear representation
Introduction to Piecewise-Linear Topology
PIECEWISE REGRESSION: A TOOL FOR IDENTIFYING ECOLOGICAL THRESHOLDS
Computation of Piecewise Quadratic Lyapunov Functions for Hybrid Systems
Computation of piecewise quadratic Lyapunov functions for hybrid systems
The Robust Estimation of Multiple Motions: Parametric and Piecewise-Smooth Flow Fields
The robust estimation of multiple motions: parametric and piecewise-smooth flow fields