# Strict definition of improper integrals by hadamard that are found in mathematical models of aerodynamics for the fractional degrees of a singularity

### Mathematics

### Аuthors

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

### Abstract

Improper integrals by Hadamard that are found in mathematical models of aerodynamics and other problems of mathematical physics are studied. The case of a strong singularity at the end of a segment of integration is considered. The fractional degrees of a singularity are researched. The existence theorem of an improper integral by Hadamard in the considered case is proved. Strict definition of an integral in terms of final value by Hadamard for the fractional degrees of a singularity is given. Explicit expression for an integral by Hadamard that doesn't contain improper integrals convenient for application in mathematical models is obtained.Download