Vi. Filippov, THE COMPLETENESS AND OTHER PROPERTIES OF SOME FUNCTION SYSTEMS IN L-P, 0-LESS-THAN-P-LESS-THAN-INFINITY, Journal of approximation theory (Print), 94(1), 1998, pp. 42-53
We study minimal conditions under which a function system is a represe
ntation system in L-p(a, b), - infinity less than or equal to a < b le
ss than or equal to + infinity, 0 < p < infinity, i.e., any function f
is an element of L-p(a, b) can be represented by at least one L-p-con
vergent series relative to this system. (C) 1998 Academic Press.