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Discrete phenomena in uniqueness in the Cauchy problem

Author: François Trèves
Journal: Proc. Amer. Math. Soc. 46 (1974), 229-233
MSC: Primary 35G10
MathSciNet review: 0352679
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Abstract: The concatenation method, recently applied to the study of solvability and hypoellipticity of linear partial differential equations with double characteristics, is used to show that uniqueness in the Cauchy problem, for certain degenerate hyperbolic equations, depends on whether the lower order terms (precisely, the subprincipal part) assume or not certain values belonging to a sequence of complex numbers.

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Keywords: Cauchy problem, concatenation, uniqueness, degenerate hyperbolic
Article copyright: © Copyright 1974 American Mathematical Society

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