内容説明
The book is an almost self-contained presentation of the most important concepts and results in viability and invariance. The viability of a set K with respect to a given function (or multi-function) F, defined on it, describes the property that, for each initial data in K, the differential equation (or inclusion) driven by that function or multi-function) to have at least one solution. The invariance of a set K with respect to a function (or multi-function) F, defined on a larger set D, is that property which says that each solution of the differential equation (or inclusion) driven by F and issuing in K remains in K, at least for a short time.The book includes the most important necessary and sufficient conditions for viability starting with Nagumo's Viability Theorem for ordinary differential equations with continuous right-hand sides and continuing with the corresponding extensions either to differential inclusions or to semilinear or even fully nonlinear evolution equations, systems and inclusions. In the latter (i.e. multi-valued) cases, the results (based on two completely new tangency concepts), all due to the authors, are original and extend significantly, in several directions, their well-known classical counterparts.
目次
1. Generalities2. Specific preliminary results
Ordinary differential equations and inclusions3. Nagumo type viability theorems4. Problems of invariance5. Viability under Caratheodory conditions6. Viability for differential inclusions7. Applications
Part 2 Evolution equations and inclusions8. Viability for single-valued semilinear evolutions 9. Viability for multi-valued semilinear evolutions10. Viability for single-valued fully nonlinear evolutions11. Viability for multi-valued fully nonlinear evolutions12. Caratheodory perturbations of m-dissipative operators13. Applications
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