On a Sharp Levi Condition in Gevrey Classes for Some Infinitely Degenerate Hyperbolic Equations and Its Necessity
Author(s) -
Haruhisa Ishida,
Karen Yagdjian
Publication year - 2002
Publication title -
publications of the research institute for mathematical sciences
Language(s) - English
Resource type - Journals
eISSN - 1663-4926
pISSN - 0034-5318
DOI - 10.2977/prims/1145476338
Subject(s) - degenerate energy levels , mathematics , pure mathematics , mathematical analysis , physics , quantum mechanics
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