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The fundamental theorem of calculus for Lipschitz functions

Sanjo Zlobec ; McGill University, Department of Mathematics and Statistics,Quebec, Canada

Puni tekst: engleski pdf 1.785 Kb

str. 215-232

preuzimanja: 4.619



Every smooth function in several variables with a Lipschitz derivative, when considered on a compact convex set, is the difference of a convex function and a convex quadratic function.
We use this result to decompose anti - derivatives of continuous Lipschitz functions and augment the fundamental theorem of calculus. The augmentation makes it possible to convexify
and monotonize ordinary differential equations and obtain possibly new results for integrals of scalar functions and for line integrals. The result is also used in linear algebra where new bounds for the determinant and the spectral radius of symmetric matrices are obtained.

Ključne riječi

Lipschitz function, decomposition of functions, convexification, fundamental theorem of calculus, definite integral, ODE, Newton's second law, Green's theorem, determinant

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