On a New Class of Singular Integro-differential Equations

Abstract

In this paper for a new class of model and non-model partial integro-differential equations with singularity in the kernel, we obtained integral representation of family of solutions by aid of arbitrary functions. Such type of integro-differential equations are different from Cauchy-type singular integro-differential equations. Cauchy-type singular integro-differential equations are studied by the methods of the theory of analytic functions. In the process of our research the new types of singular integro-differential operators are introduced and main property of entered operators are learned. It is shown that the solution of studied equation is equivalent to the solution of system of two equations with respect to x and y, one of which is integral equation and the other is integro-differential equation. Further, non-model integro-differential equations are studied by regularization method. This regularization method for non-model equation is based on selecting and analysis of a model part of the equation and reduced to the solution of two second kind Volterra type integral equations with weak singularity in the kernel. It is shown that the presence of a non-model part in the equation does not affect to the general structure of the solutions. From here investigation of the model equations for given class of the integro-differential equations becomes important. In the cases, when the solution of given integro-differential equation depends on any arbitrary functions, a Cauchy type problems are investigated.

Inverse problem for Fredholm integro-differential equation with final redefinition conditions at the end of the interval

“…For values of parameters (ν, λ) from the set Ω 1 , the inverse problem (1)-( 3) does not make sense. Because in this case condition (15) is not satisfied. But, the direct problem (1), (2) has an infinite set of solutions, if ϕ 1 = ϕ 2 = 0 and α(t) ≡ 0 for all t ∈ [0; T ].…”