Second Order Equations With Nonnegative Characteristic Form:
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Bibliographic Details
Main Author: Oleĭnik, O. A. (Author)
Format: Electronic eBook
Language:English
Published: Boston, MA Springer US 1973
Subjects:
Online Access:Volltext
Item Description:Second order equations with nonnegative characteristic form constitute a new branch of the theory of partial differential equations, having arisen within the last 20 years, and having undergone a particularly intensive development in recent years. An equation of the form (1) is termed an equation of second order with nonnegative characteristic form on a set G, kj if at each point x belonging to G we have a (xHk~j ~ 0 for any vector ~ = (~l' ... '~m)' In equation (1) it is assumed that repeated indices are summed from 1 to m, and x = (x l' ••• , x ). Such equations are sometimes also called degenerating m elliptic equations or elliptic-parabolic equations. This class of equations includes those of elliptic and parabolic types, first order equations, ultraparabolic equations, the equations of Brownian motion, and others. The foundation of a general theory of second order equations with nonnegative characteristic form has now been established, and the purpose of this book is to pre­ sent this foundation. Special classes of equations of the form (1), not coinciding with the well-studied equations of elliptic or parabolic type, were investigated long ago, particularly in the paper of Picone [105], published some 60 years ago
Physical Description:1 Online-Ressource (VII, 259 p)
ISBN:9781468489651
9781468489675
DOI:10.1007/978-1-4684-8965-1

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