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Criteria for the discreteness of the spectrum of a hypoelliptic operator
M. G. Gimadislamov Bashkir State University
Received: 26.02.1980
Citation:
M. G. Gimadislamov, “Criteria for the discreteness of the spectrum of a hypoelliptic operator”, Mat. Zametki, 30:5 (1981), 685–693; Math. Notes, 30:5 (1981), 840–844
Linking options:
https://www.mathnet.ru/eng/mzm10061 https://www.mathnet.ru/eng/mzm/v30/i5/p685
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