Linear operators and approximation theory. Lineĭnye operatory i teorii︠a︡ priblizheniĭ. English Korovkin, P. P. (Pavel Petrovich) Linear operators. Approximation theory. QA320 .K613 519.8 19 KOL Translation of Lineĭnye operatory i teorii︠a︡ priblizheniĭ. Delhi, Hindustan Pub. Corp., 1960. 1960. 1960 Text vii, 222 p. eng engrus [Russian monographs and texts on advanced mathematics and physics ; v. 3] International monographs on advanced mathematics & physics International monographs on advanced mathematics and physics.