Mathematical Research Letters

Volume 3, Issue 4, July 1996 pp. 511-526.

Infinite Dimensional Families of Locally Nonsolvable Partial Differential Operators

Authors: Michael Christ and G. E. Karadzhov
Author institution: University of California Los Angeles, and Bulgarian Academy of Science

Summary: Local solvability is analyzed for natural families of partial differential operators having double characteristics. In some families the set of all operators that are not locally solvable is shown to have both infinite dimension and infinite codimension.

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