To the solution of the Solonnikov-Fasano problem with boundary moving on arbitrary law x = γ(t):

Abstract

In this paper we study the solvability of the boundary value problem for the heat equation in a domain that degenerates into a point at the initial moment of time. In this case, the boundary changing with time moves according to an arbitrary law x = (t): Using the generalized heat potentials, the problem under study is reduced to a pseudo-Volterra integral equation such that the norm of the integral operator is equal to one and it is shown that the corresponding homogeneous integral equation has a nonzero solution. Key words: heat equation, moving boundary, degenerating domain, pseudo-Volterra integral equation.