2019
Том 71
№ 11

# Lower bounds for the volume of the image of a ball

Abstract

UDC 517.5
We consider ring $Q$-homeomorphisms with respect to $p$-modulus in the space $\Bbb R^{n}$ as $p>n$. We obtain a lower bound for the volume of the image of a ball under these mappings. We solve the extremal problems of minimization of functionals of the volume of the image of a ball and the area of the image of a sphere.

Citation Example: Klishchuk B. A., Salimov R. R. Lower bounds for the volume of the image of a ball // Ukr. Mat. Zh. - 2019. - 71, № 6. - pp. 774-785.