Ultraparabolic Equations with Infinitely Increasing Coefficients in the Group of Lowest Terms and Degenerations in the Initial Hyperplane

Autor: S. D. Ivasyshen, H. S. Pasichnyk
Rok vydání: 2020
Předmět:
Zdroj: Journal of Mathematical Sciences. 249:333-354
ISSN: 1573-8795
1072-3374
DOI: 10.1007/s10958-020-04946-3
Popis: We consider an ultraparabolic equation with lowest coefficients infinitely increasing as |x| → ∞ and degenerations for t = 0 . We find the fundamental solution G of this equation in the explicit form, establish the properties of the function G and, in particular, deduce exact estimates for G and its derivatives. By using these properties, we prove theorems on the integral representations of solutions of the inhomogeneous equation bounded as functions of x and such that their behavior as t → 0 depends on the type of degeneration of the equation for t = 0 .
Databáze: OpenAIRE