The square root problem for elliptic operators a survey

Author(s):  
Alan McIntosh

2002 ◽  
Vol 156 (2) ◽  
pp. 633 ◽  
Author(s):  
Pascal Auscher ◽  
Steve Hofmann ◽  
Michael Lacey ◽  
Alan McIntosh ◽  
Ph. Tchamitchian


2001 ◽  
Vol 1 (4) ◽  
pp. 361-385 ◽  
Author(s):  
Pascal Auscher ◽  
Steve Hofmann ◽  
Alan McIntosh ◽  
Philippe Tchamitchian


2016 ◽  
Vol 32 (10) ◽  
pp. 1121-1144 ◽  
Author(s):  
Yan Ping Chen ◽  
Yong Ding ◽  
Steve Hofmann


1992 ◽  
Vol 139 (6) ◽  
pp. 505 ◽  
Author(s):  
S.E. McQuillan ◽  
J.V. McCanny
Keyword(s):  




2014 ◽  
Vol 1 ◽  
pp. 816-819
Author(s):  
Akitoshi Takayasu ◽  
Shin'ichi Oishi


Author(s):  
Yin LI ◽  
Yu ZHANG ◽  
Xiaoli GUO
Keyword(s):  


Author(s):  
Charles L. Epstein ◽  
Rafe Mazzeo

This book provides the mathematical foundations for the analysis of a class of degenerate elliptic operators defined on manifolds with corners, which arise in a variety of applications such as population genetics, mathematical finance, and economics. The results discussed in this book prove the uniqueness of the solution to the martingale problem and therefore the existence of the associated Markov process. The book uses an “integral kernel method” to develop mathematical foundations for the study of such degenerate elliptic operators and the stochastic processes they define. The precise nature of the degeneracies of the principal symbol for these operators leads to solutions of the parabolic and elliptic problems that display novel regularity properties. Dually, the adjoint operator allows for rather dramatic singularities, such as measures supported on high codimensional strata of the boundary. The book establishes the uniqueness, existence, and sharp regularity properties for solutions to the homogeneous and inhomogeneous heat equations, as well as a complete analysis of the resolvent operator acting on Hölder spaces. It shows that the semigroups defined by these operators have holomorphic extensions to the right half plane. The book also demonstrates precise asymptotic results for the long-time behavior of solutions to both the forward and backward Kolmogorov equations.



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