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On a way of obtaining lower estimates for the errors of quadrature formulas. (English. Russian original) Zbl 0758.41032
Math. USSR, Sb. 71, No. 1, 247-257 (1992); translation from Mat. Sb. 181, No. 10, 1403-1413 (1990).
Summary: The purpose of this article is to obtain best possible lower estimates of the errors of quadrature formulas with a fixed number of nodes for classes of functions with bounded mixed derivative. The results obtained here lead to a strengthening of known lower estimates for the deviation of grids.

MSC:
41A55 Approximate quadratures
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