Аннотация
There is studied the Hölder space solution [Formula: see text] of the problem for parabolic equation with the time derivative [Formula: see text] in the boundary condition, where [Formula: see text] is a small parameter. The unique solvability of the perturbed problem and estimates of it’s solution are obtained. The convergence of [Formula: see text] as [Formula: see text] to the solution of the unperturbed problem is proved. Boundary layer is not appeared.