Nonsmooth analysis on smooth manifolds

• Autores: Yu S. Ledyaev, Q. J. Zhu
• Localización: Transactions of the American Mathematical Society, ISSN 0002-9947, Vol. 359, Nº 8, 2007, págs. 3687-3732
• Idioma: inglés
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• Resumen

  • We study infinitesimal properties of nonsmooth (nondifferentiable) functions on smooth manifolds. The eigenvalue function of a matrix on the manifold of symmetric matrices gives a natural example of such a nonsmooth function. A subdifferential calculus for lower semicontinuous functions is developed here for studying constrained optimization problems, nonclassical problems of calculus of variations, and generalized solutions of first-order partial differential equations on manifolds. We also establish criteria for monotonicity and invariance of functions and sets with respect to solutions of differential inclusions.