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Scientific notes and problems
Orthogonal systems of functions whose derivatives are also orthogonal
B. M. Gagaev
Received: 15.07.1955
Citation:
B. M. Gagaev, “Orthogonal systems of functions whose derivatives are also orthogonal”, Russian Math. Surveys, 12:2 (1957)
Linking options:
https://www.mathnet.ru/eng/rm7585 https://www.mathnet.ru/eng/rm/v12/i2/p133
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