Journal
JOURNAL OF DIFFERENTIAL EQUATIONS
Volume 252, Issue 1, Pages 56-90Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jde.2011.09.024
Keywords
Lie symmetry groups; Fundamental solutions; Transition densities; Fourier transforms; Representation theory
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In this paper we introduce new methods based upon integrating Lie symmetries for the construction of explicit fundamental solutions of multi-dimensional second order parabolic PDEs. We present applications to the problem of finding transition probability densities for multi-dimensional diffusions and to representation theory. Many explicit examples are given to illustrate the techniques. (C) 2011 Elsevier Inc. All rights reserved.
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