Four conjectures in Nonlinear Analysis

In this chapter, I formulate four challenging conjectures in Nonlinear Analysis. More precisely: a conjecture on the Monge-Amp\`ere equation; a conjecture on an eigenvalue problem; a conjecture on a non-local problem; a conjecture on disconnectedness versus infinitely many solutions.Comment: arXiv admin note: text overlap with arXiv:1504.01010, arXiv:1409.5919, arXiv:1612.0819

EXISTENCE AND RELAXATION PROBLEMS IN OPTIMAL SHAPE DESIGN

A general abstract theorem on existence of solutions to optimal shape design problems for systems governed by partial differential equations, or variational inequalities or hemivariational inequalities is formulated and two main properties (conditions) responsible for the existence are discussed. When one of them fails one have to make “relaxation” in order to get some generalized optimal shapes. In particular, some relaxation “in state”, based on Γ convergence, is presented in details for elliptic, parabolic and hyperbolic PDEs (and then for optimal shape design problems), while the relaxation “in cost functional” is discussed for some special classes of functionals

Sensitivity of optimal solutions to control problems for systems described by hemivariational inequalities

In this paper the sensitivity of optimal solutions to control problems for the systems described by stationary and evolution heinivariational inequalities (HVIs) under perturbations of state relations and of cost functionals is investigated. First, basing on the theory of sequential [Gamma]-convergence we recall the abstract scheme concerning convergence of minimal values and minimizers. The abstract scheme works provided we can establish two properties: the Kuratowski convergence of solution sets for HVIs (state relations) and some complementary [Gamma]-convergence of the cost functionals. Then these two properties are implemented in each considered case