Vestnik of Samara University. Natural Science SeriesVestnik of Samara University. Natural Science Series2541-75252712-8954Samara National Research University514210.18287/2541-7525-2017-23-1-15-20UnknownON SOLVABILITY OF NONLOCAL PROBLEM FOR THIRD-ORDER EQUATIONKetchinaO. M.morenov@ssau.ruSamara State University of Social Sciences and Education2009201723115201909201719092017Copyright © 1970, Ketchina O.M.1970<p>In this paper nonlocal problem with integral conditions for partial differential equation of the third order is considered. The existence of a unique classical solution is proved in rectangular domain. The proof is carried out by the method of auxiliary problems. At first the problem for a new function for partial differential equation of the first order is considered. 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