The Method Of Layer Potentials For The Heat Equation In Time Varying Domains
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| Author | : John L. Lewis |
| Publisher | : American Mathematical Soc. |
| Total Pages | : 170 |
| Release | : 1995 |
| Genre | : Mathematics |
| ISBN | : 0821803603 |
This memoir consists of three papers in which we develop the method of layer potentials for the heat equation in time-varying domains. In Chapter I we show certain singular integral operators on [italic]L[superscript italic]p are bounded. in Chapter II, we develop a modification of the David buildup scheme to obtain [italic]L[superscript italic]p boundedness of the double layer heat potential on the boundary of our domains. In Chapter III, we use the results of the first two chapters to show the mutual absolute continuity of parabolic measure and a certain projective Lebesgue measure.
| Author | : Stefania A. M. Marcantognini |
| Publisher | : American Mathematical Soc. |
| Total Pages | : 528 |
| Release | : 1995 |
| Genre | : Mathematics |
| ISBN | : 0821803042 |
The collection covers a broad spectrum of topics, including: wavelet analysis, Haenkel operators, multimeasure theory, the boundary behavior of the Bergman kernel, interpolation theory, and Cotlar's Lemma on almost orthogonality in the context of L[superscript p] spaces and more...
| Author | : Jose Garcia-Cuerva |
| Publisher | : CRC Press |
| Total Pages | : 432 |
| Release | : 2018-01-18 |
| Genre | : Mathematics |
| ISBN | : 135108903X |
Fourier Analysis and Partial Differential Equations presents the proceedings of the conference held at Miraflores de la Sierra in June 1992. These conferences are held periodically to assess new developments and results in the field. The proceedings are divided into two parts. Four mini-courses present a rich and actual piece of mathematics assuming minimal background from the audience and reaching the frontiers of present-day research. Twenty lectures cover a wide range of data in the fields of Fourier analysis and PDE. This book, representing the fourth conference in the series, is dedicated to the late mathematician Antoni Zygmund, who founded the Chicago School of Fourier Analysis, which had a notable influence in the development of the field and significantly contributed to the flourishing of Fourier analysis in Spain.
| Author | : Steve Hofmann |
| Publisher | : American Mathematical Soc. |
| Total Pages | : 129 |
| Release | : 2001 |
| Genre | : Mathematics |
| ISBN | : 0821826840 |
This memoir considers the Dirichlet problem for parabolic operators in a half space with singular drift terms. Chapter I begins the study of a parabolic PDE modelled on the pullback of the heat equation in certain time varying domains considered by Lewis-Murray and Hofmann-Lewis. Chapter II obtains mutual absolute continuity of parabolic measure and Lebesgue measure on the boundary of this halfspace and also that the $L DEGREESq(R DEGREESn)$ Dirichlet problem for these PDEs has a solution when $q$ is large enough. Chapter III proves an analogue of a theorem of Fefferman, Kenig, and Pipher for certain parabolic PDEs with singular drift terms. Each of the chapters that comprise this memoir has its own numbering system and list
| Author | : Gary M Lieberman |
| Publisher | : World Scientific |
| Total Pages | : 462 |
| Release | : 1996-11-06 |
| Genre | : Mathematics |
| ISBN | : 9814498114 |
This book is an introduction to the general theory of second order parabolic differential equations, which model many important, time-dependent physical systems. It studies the existence, uniqueness, and regularity of solutions to a variety of problems with Dirichlet boundary conditions and general linear and nonlinear boundary conditions by means of a priori estimates. The first seven chapters give a description of the linear theory and are suitable for a graduate course on partial differential equations. The last eight chapters cover the nonlinear theory for smooth solutions. They include much of the author's research and are aimed at researchers in the field. A unique feature is the emphasis on time-varying domains.
| Author | : Ole H. Hald |
| Publisher | : American Mathematical Soc. |
| Total Pages | : 162 |
| Release | : 1996 |
| Genre | : Mathematics |
| ISBN | : 0821804863 |
In this paper we consider an eigenvalue problem which arises in the study of rectangular membranes. The mathematical model is an elliptic equation, in potential form, with Dirichlet boundary conditions. We show that the potential is uniquely determined, up to an additive constant, by a subset of the nodal lines of the eigenfunctions. A formula is shown which, when the additive constant is given, yields an approximation to the potential at a dense set of points. We present an estimate for the error made by the formula. A substantial part of this work is the derivation of the asymptotic forms for a rich set of eigenvalues and eigenfunctions for a large set of rectangles.
| Author | : Dihua Jiang |
| Publisher | : American Mathematical Soc. |
| Total Pages | : 210 |
| Release | : 1996 |
| Genre | : Mathematics |
| ISBN | : 0821804766 |
Automorphic L-functions, introduced by Robert Langlands in the 1960s, are natural extensions of such classical L-functions as the Riemann zeta function, Hecke L-functions, etc. They form an important part of the Langlands Program, which seeks to establish connections among number theory, representation theory, and geometry. This book offers, via the Rankin-Selberg method, a thorough and comprehensive examination of the degree 16 standard L-function of the product of two rank two symplectic similitude groups, which includes the study of the global integral of Rankin-Selberg type and local integrals, analytic properties of certain Eisenstein series of symplectic groups, and the relevant residue representations.
| Author | : Tai-Ping Liu |
| Publisher | : American Mathematical Soc. |
| Total Pages | : 135 |
| Release | : 1997 |
| Genre | : Mathematics |
| ISBN | : 0821805452 |
We are interested in the time-asymptotic behavior of solutions to viscous conservation laws. Through the pointwise estimates for the Green's function of the linearized system and the analysis of coupling of nonlinear diffusion waves, we obtain explicit expressions of the time-asymptotic behavior of the solutions. This yields optimal estimates in the integral norms. For most physical models, the viscosity matrix is not positive definite and the system is hyperbolic-parabolic, and not uniformly parabolic. This implies that the Green's function may contain Dirac [lowercase Greek]Delta-functions. When the corresponding inviscid system is non-strictly hyperbolic, the time-asymptotic state contains generalized Burgers solutions. These are illustrated by applying our general theory to the compressible Navier-Stokes equations and the equations of magnetohydrodynamics.
| Author | : Stéphane Jaffard |
| Publisher | : American Mathematical Soc. |
| Total Pages | : 127 |
| Release | : 1996 |
| Genre | : Mathematics |
| ISBN | : 0821804758 |
We investigate several topics related to the local behavior of functions: pointwise Hölder regularity, local scaling invariance and very oscillatory "chirp-like" behaviors. Our main tool is to relate these notions to two-microlocal conditions which are defined either on the Littlewood-Paley decomposition or on the wavelet transform. We give characterizations and the main properties of these two-microlocal spaces and we give several applications, such as bounds on the dimension of the set of Hölder singularities of a function, Sobolev regularity of trace functions, and chirp expansions of specific functions.
| Author | : Valentina Barucci |
| Publisher | : American Mathematical Soc. |
| Total Pages | : 95 |
| Release | : 1997 |
| Genre | : Mathematics |
| ISBN | : 0821805444 |
In Chapter I, various (numerical) semigroup-theoretic concepts and constructions are introduced and characterized. Applications in Chapter II are made to the study of Noetherian local one-dimensional analytically irreducible integral domains, especially for the Gorenstein, maximal embedding dimension, and Arf cases, as well as to the so-called Kunz case, a pervasive kind of domain of Cohen-Macaulay type 2.
