Open Access
1981 Analytic hypo-ellipticity of a system of microdifferential equations with non-involutory characteristics
Toshinori Ôaku
Proc. Japan Acad. Ser. A Math. Sci. 57(9): 438-441 (1981). DOI: 10.3792/pjaa.57.438
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Vol.57 • No. 9 • 1981
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