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Pleshakov M. G., Tyshkevich S. V. One counterexample of shape-preserving approximation. Izvestiya of Saratov University. Mathematics. Mechanics. Informatics, 2014, vol. 14, iss. 2, pp. 144-150. DOI: 10.18500/1816-9791-2014-14-2-144-150, EDN: SHHIDL

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One counterexample of shape-preserving approximation

Pleshakov Mixail Gennadevich, Saratov State University
Tyshkevich Sergey Viktorovich, Saratov State University

Let 2s points yi=−π≤y2s

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