On degenerate elliptic-parabolic operators of second order and their associated diffusions. (English) Zbl 0344.35041


35J70 Degenerate elliptic equations
35K10 Second-order parabolic equations
35B05 Oscillation, zeros of solutions, mean value theorems, etc. in context of PDEs
35M99 Partial differential equations of mixed type and mixed-type systems of partial differential equations
60J60 Diffusion processes
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