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JOURNALS // Izvestiya Rossiiskoi Akademii Nauk. Seriya Matematicheskaya // Archive

Izv. Akad. Nauk SSSR Ser. Mat., 1968 Volume 32, Issue 6, Pages 1391–1413 (Mi im2521)

This article is cited in 11 papers

On the smoothness of solutions of degenerate elliptic equations

M. I. Freidlin


Abstract: It is shown that under broad assumptions the generalized solution of boundary problems for degenerate second-order equations satisfies a Hölder condition. An example is given which shows that increasing the smoothness of the data of the problem cannot alone achieve greater smoothness of the solution. Conditions are determined for existence of the derivatives of the generalized solution. The investigation is based on probability methods.

UDC: 517.9

MSC: 35J70, 35B65, 35J25, 26B35, 35A05

Received: 13.09.1967


 English version:
Mathematics of the USSR-Izvestiya, 1968, 2:6, 1337–1359

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© Steklov Math. Inst. of RAS, 2026