Vestnik of Samara University. Natural Science SeriesVestnik of Samara University. Natural Science Series2541-75252712-8954Samara National Research University449210.18287/2541-7525-2015-21-3-64-72Global theorem of existence and uniqueness of the firstboundary value problem for nonlinear integrodifferential equations ofparabolic typeFilatovO.P.morenov.sv@ssau.ruSamara State University1903201521364721805201718052017Copyright © 2015, Filatov O.2015Global theorem of existence and uniqueness of solution of the first boundary value problem for nonlinear integrodifferential equation of parabolic type is proved. If the right-hand side of the equation is integrally bounded, then we have estimate of the norm of the difference of two solutions, which implies continuous dependence of solution on the initial function and uniqueness of so- lution of the first boundary value problem. The problem under consideration generalizes the real model for measuring the level of incompressible fluid in the fuel tanks missiles. Therefore, such problem have a current application.интегродифференциальное уравнениепараболический типпервая краевая задачааприорная оценкаобобщенное решениесуществованиеединственностьнепрерывная зависимостьintegrodifferential equation, parabolic type, first boundary value problem, generalized solution, existence, uniqueness, continuous dependence