Mathematics of the USSR-Izvestiya · 1970 · 30 citations · 1 references
ComputingComputer ScienceTheory Of ComputationApproximation AlgorithmsApproximation MethodsSpecial FunctionsApproximation PropertiesApproximation TheoryBest ApproximationFinite-dimensional ApproximationStrong Converse TheoremSubspace Theorem
Approximation of functions of n variables is studied by means of infinite-dimensional subspaces of singular functions of a special form (quasipolynomials). In particular, best approximation is examined by means of these subspaces, and both direct and converse theorems are proved.
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