Yu. A. Brudnyi, P. A. Shvartsman, “A linear extension operator for a space of smooth functions defined on a closed subset in <nobr>$\mathbf{R}^n$</nobr>”, Dokl. Akad. Nauk SSSR, 1985, Volume 280, Number 2,Pages <nobr>268

MATHEMATICS

A linear extension operator for a space of smooth functions defined on a closed subset in $\mathbf{R}^n$

Yu. A. Brudnyi, P. A. Shvartsman

Yaroslavl State University

UDC: 517.51

Presented: S. M. Nikol'skii
Received: 28.02.1984