Parabolic Boundary Value Problems

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Samuil D. Eidelman
506 g
240x160x17 mm

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I Equations and Problems.- I.1 Equations.- I.1.1 Introduction.- I.1.2 Systems parabolic in the sense of Petrovski?.- I.1.3 Systems parabolic in the sense of Solonnikov.- I.2 Initial and boundary value problems.- I.2.1 Introduction.- I.2.2 The Cauchy problem. The initial value problem.- I.2.3 Parabolic boundary value problems.- I.2.4 Particular cases. Examples.- I.2.5 Parabolic conjugation problems.- I.2.6 Nonlocal parabolic boundary value problems.- II Functional Spaces.- II.1 Spaces of test functions and distributions.- II.1.1 Definition and basic roperties of distributions. Spaces D(?) and D'(?).- II.1.2 Differentiation of distributions. Multiplication of distributions by smooth functions.- II.1.3 Distributions with compact supports. The spaces ?(?) and ?'(?), S(?) and S'(?).- II.1.4 Convolution and direct product of distributions.- II.1.5 Fourier and Laplace transformations of distributions.- II.2 The Hilbert spaces Hs and ?s.- II.2.1 The isotropic spaces Hs(?n) and H+s(?n).- II.2.2 The isotropic spaces Hs(?+n) and their duals.- II.2.3 Restriction to a hyperplane.- II.2.4 The anisotropic Sobolev-Slobodetski? spaces ?s.- II.2.5 The anisotropic spaces ?s on ?+n+1 and E+n+1, ?++n+1 and E+n.- II.2.6 The dual spaces ?s.- II.2.7 Traces and continuation of functions in the anisotropic spaces ?s.- II.2.8 Weighted anisotropic spaces; basic properties.- II.2.9 Embeddings, traces and continuation of functions in weighted anisotropic spaces.- II.2.10 Equivalent norms in ?s,r(?n+1?), ?s,?(En+1,?), ?s (?n,?).- II.2.11 The spaces Hs(G) and Hs(?).- II.2.12 The spaces ?s(S+,?) and ?s(?+,?).- II.3 Banach spaces of Hölder functions.- II.3.1 The spaces Cs(G) and Cs(F).- II.3.2 The spaces Cs (?) and Cs (S).- III Linear Operators.- III.1 Operators of potential type.- III.2 Operators of multiplication by a function.- III.2.1 Roundedness of truncation operators.- III.2.2 Boundedness of the operators of multiplication by smooth functions.- III.3 Commutators. Green formulas.- III.3.1 The operators Jn, J0.- III.3.2 Formulas for calculating P(x, D)v+ (?) and b(?', t, D', Dt)?+(?', t).- III.3.3 Formulas for calculating l(x, t, D, Dt)u++(x, t).- III.3.4 Corollaries. Commutation formulas for differential and truncation operators. Green formulas.- III.4 On equivalent norms in ?s(?+n+1,?), ?s(E+n+1,?), and Hs(?+n), s ? 0.- III.4.1 Equivalents norms defined by truncations.- III.4.2 Restriction of distributions to an open half-space.- III.5 The spaces $${{ ilde{H}}^{s}}$$ and $${{ ilde{mathcal{H}}}^{s}}$$.- III.5.1 The spaces $$ ilde{H}_{{(K)}}^{s}(G)$$ and $$ ilde{mathcal{H}}_{{(Q)}}^{{s,r}}(E_{ + }^{{n + 1}},gamma )$$.- III.5.2 The spaces $$ ilde{mathcal{H}}_{{(kappa , au ,P)}}^{s}(Omega )$$ and $$ ilde{mathcal{H}}_{{(kappa , au ,P)}}^{s}({{Omega }_{ + }},gamma )$$.- III.6 Differential operators in the space $${{ ilde{mathcal{H}}}^{s}}$$.- III.6.1 Definition of the operator lu in $${{ar{Omega }}_{ + }}$$; its boundedness.- III.6.2 Definition of the operator $$lu{{ }_{{{{{ar{S}}}_{ + }}}}}$$; its boundedness.- III.6.3 Definition of the operators $$lu{{ }_{{ar{G}}}},lu{{ }_{Gamma }}$$; their boundedness.- IV Parabolic Boundary Value Problems in Half-Space.- IV.1 Non-homogeneous systems in the space ?++s(?n+1,?).- IV.1.1 Non-homogeneous systems in $$ar{E}_{ + }^{{n + 1}}$$.- IV.1.2 Non-homogeneous systems in $$ar{mathbb{R}}_{ + }^{{n + 1}}$$.- IV.2 Initial value and Cauchy problems for parabolic systems in spaces ?s.- IV.2.1 Formulation of the initial value problem in the spaces of distributions ?s.- IV.2.2 The Cauchy problem in $${{ ilde{mathcal{H}}}^{s}}$$ for a system parabolic in in the sense of Petrovski?.- IV.2.3 Theorem on the solvability of the general initial value problem.- IV.3 Model parabolic boundary value problems in $$ar{mathbb{R}}_{{ + + }}^{{n + 1}}$$.- IV.3.1 Formulation of the model boundary value problem in the spaces $${{ ilde{mathcal{H}}}_{s}}$$ for a system parabolic in the sense of Petrovski?
The present monograph is devoted to the theory of general parabolic boundary value problems. The vastness of this theory forced us to take difficult decisions in selecting the results to be presented and in determining the degree of detail needed to describe their proofs. In the first chapter we define the basic notions at the origin of the theory of parabolic boundary value problems and give various examples of illustrative and descriptive character. The main part of the monograph (Chapters II to V) is devoted to a the detailed and systematic exposition of the L -theory of parabolic 2 boundary value problems with smooth coefficients in Hilbert spaces of smooth functions and distributions of arbitrary finite order and with some natural appli cations of the theory. Wishing to make the monograph more informative, we included in Chapter VI a survey of results in the theory of the Cauchy problem and boundary value problems in the traditional spaces of smooth functions. We give no proofs; rather, we attempt to compare different results and techniques. Special attention is paid to a detailed analysis of examples illustrating and complementing the results for mulated. The chapter is written in such a way that the reader interested only in the results of the classical theory of the Cauchy problem and boundary value problems may concentrate on it alone, skipping the previous chapters.