Autor:	ВОЛОШИН, Г. А., МАСЛЮЧЕНКО, В. К., МЕЛЬНИК, В. С.
Zdroj:	Matematychni Studii; 2017, Vol. 48 Issue 1, p74-81, 8p
Abstrakt:	We prove that for a function α0:[0,1]→R there exists a separately continuous function f:[0,1]²→R such that E0(f^x)=α0(x) on [0,1] if and only if α0 is the nonnegative lower semicontinuous function, where f^x(y)=f(x,y) for any x,y,∈[0,1] and E0(g) is the best approximation of a function g by a constant. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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