Linear And Nonlinear Parabolic Complex Equations

"This is a very interesting book written by a well-known expert on complex methods in partial differential equations. It contains many recent results, many of them published for the first time, some published originally in Chinese".Mathematical Reviews

This book deals mainly with linear and nonlinear parabolic equations and systems of second order. It first transforms the real forms of parabolic equations and systems into complex forms, and then discusses several initial boundary value problems and Cauchy problems for quasilinear and nonlinear parabolic complex equations of second order with smooth coefficients or measurable coefficients. Parabolic complex equations are discussed in the nonlinear case and the boundary conditions usually include the initial irregular oblique derivative. The boundary value problems are considered in multiply connected domains and several methods are used.

In response to the growing use of reaction diffusion problems in many fields, this monograph gives a systematic treatment of a class of nonlinear parabolic and elliptic differential equations and their applications these problems. It is an important reference for mathematicians and engineers, as well as a practical text for graduate students.

In the recent half-century, many mathematicians have investigated various problems on several equations of mixed type and obtained interesting results, with important applications to gas dynamics. However, the Tricomi problem of general mixed type equations of second order with parabolic degeneracy has not been completely solved, particularly the Tricomi and Frankl problems for general Chaplygin equation in multiply connected domains posed by L Bers, and the existence, regularity of solutions of the above problems for mixed equations with non-smooth degenerate curve in several domains posed by J M Rassias. The method revealed in this book is unlike any other, in which the hyperbolic number and hyperbolic complex function in hyperbolic domains, and the complex number and complex function in elliptic domains are used. The corresponding problems for first order complex equations with singular coefficients are first discussed, and then the problems for second order complex equations are considered, where we pose the new partial derivative notations and complex analytic methods such that the forms of the above first order complex equations in hyperbolic and elliptic domains are wholly identical. In the meantime, the estimates of solutions for the above problems are obtained, hence many open problems including the above TricomiOCo Bers and TricomiOCoFranklOCoRassias problems can be solved. Sample Chapter(s). Chapter 1: Elliptic Complex Equations of First Order (247 KB). Contents: Elliptic Complex Equations of First Order; Elliptic Complex Equations of Second Order; Hyperbolic Complex Equations of First and Second Orders; First Order Complex Equations of Mixed Type; Second Order Linear Equations of Mixed Type; Second Order Quasilinear Equations of Mixed Type. Readership: Graduate students and academics in analysis, differential equations and applied mathematics.

Unlike the classical Sturm theorems on the zeros of solutions of second-order ODEs, Sturm's evolution zero set analysis for parabolic PDEs did not attract much attention in the 19th century, and, in fact, it was lost or forgotten for almost a century. Briefly revived by Plya in the 1930's and rediscovered in part several times since, it was not un

In the fishing community of Fjallbacka, life is remote, peaceful, and for some, tragically short. Foul play was always suspected in the disappearance twenty years ago of two young campers, but their bodies were never found. But now, a young boy out playing has confirmed the grim truth. Their remains are discovered alongside those of a fresh victim, sending the tiny town into shock. Local detective Patrik Hedstrom, expecting a baby with his girlfriend Erica, can only imagine what it is like to lose a child. When a second young girl goes missing, Hedstrom's attention focuses on the Hults, a feuding clan of misfits, religious fanatics and criminals. The suspect list is long but time is short which of this family's dark secrets will provide the vital clue? Praise for The Ice Princess : The hottest crime genre of the moment is Nordic noir and Swedish writer Camilla Luckberg (who shares Stieg Larsson's translator) is one of the reasons. As with all Scandinavian murder mysteries, it's darker, bleaker, and the plot far more sinister than similar American fare. Larsson fans who give Luckberg's novel a chance to seduce them will be rewarded. USA Today At the start of Luckberg's haunting U.S. debut, biographer Erica Falck feels compelled to write a novel about why her beautiful friend Alex would kill herself. Luckberg skillfully details how horrific secrets are never completely buried and how silence can kill the soul." Publishers Weekly , starred review Camilla Luckberg has written seven blockbuster novels in her native Swedish but, until now, no one has published any of them in the United States. Now Pegasus Books has stepped forward.â¿ â¿¿ The New York Times Heart-stopping a masterclass in Scandinavian crime fiction." Val McDermid

Equations of parabolic type are encountered in many areas of mathematics and mathematical physics, and those encountered most frequently are linear and quasi-linear parabolic equations of the second order. In this volume, boundary value problems for such equations are studied from two points of view: solvability, unique or otherwise, and the effect of smoothness properties of the functions entering the initial and boundary conditions on the smoothness of the solutions.