Semigroups of Operators: Theory and Applications: International Conference in Newport Beach, December 14-18, 1998 [Hardcover]

These Proceedings comprise the bulk of the papers presented at the Inter? national Conference on Semigroups of Opemtors: Theory and Contro~ held 14-18 December 1998, Newport Beach, California, U.S.A. The intent of the Conference was to highlight recent advances in the the? ory of Semigroups of Operators which provides the abstract framework for the time-domain solutions of time-invariant boundary-value/initial-value problems of partial differential equations. There is of course a firewall between the ab? stract theory and the applications and one of the Conference aims was to bring together both in the hope that it may be of value to both communities. In these days when all scientific activity is judged by its value on dot com it is not surprising that mathematical analysis that holds no promise of an immediate commercial product-line, or even a software tool-box, is not high in research priority. We are particularly pleased therefore that the National Science Foundation provided generous financial support without which this Conference would have been impossible to organize. Our special thanks to Dr. Kishan Baheti, Program Manager.A Semigroup Approach to the Maximum Likelihood State Estimation of Stochastic Parabolic Systems.- Semigroup Theory in Aeroelasticity.- B-bounded Semigroups, Existence Families and Implicit Evolution Equations.- Semigroups and Asymptotic Mean Periodicity.- Some Problems in Stochastic Analysis and Semigroup Theory.- On Dirac Observables.- Solutions of the Operator Equation A*K + KA + KRK = -W.- Flutter as a Perturbation Problem for Semigroups.- Linear Extensions of Nonlinear Semigroups.- Second-order Subelliptic Operators on Lie Groups II: Real Measurable Principal Coefficients.- Generalized Wentzell Boundary Conditions and Analytic Semigroups in C[0,1].- Semigroup Theory and Operator Trigonometry.- Unbounded Representations of Discrete Abelian Semigroups.- Some Estimates of Solutions for the Equations of Motion Of Compressible Viscous Flulãz