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单词 Picone's Theorem
释义

Picone's Theorem

Let be integrable in , let be of bounded variation in , let denote the least upper boundof in , and let denote the total variation of in . Given the function


then the terms of its Legendre Series




where is a Legendre Polynomial, satisfy the inequalities


for (Sansone 1991).

See also Jackson's Theorem, Legendre Series


References

Picone, M. Appunti di Analise Superiore. Naples, Italy,, p. 260, 1940.

Sansone, G. Orthogonal Functions, rev. English ed. New York: Dover, pp. 203-205, 1991.


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