To approximate functions of a single variable by using linear interpolation is routine in empirical studies. Here, we consider approximating functions of several variables in a similar piecewise ...

Abstract: This paper deals with the problem of obtaining a stable triangular approximation for a linear, square, stable, discrete-time MIMO system. We solve this problem through an analytic procedure ...

Additionally, foundational work on the tractability of multivariate approximation in weighted Hilbert spaces with exponential weights continues to influence current research by offering necessary ...

An algorithm is described for the solution of nonseparable convex optimization problems. This method utilizes iterative piecewise-linear approximation of the nonseparable objective function, but ...