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Abelian Theorem


A theorem which asserts that if a sequence or function behaves regularly, then some average of it behaves regularly. For example,

 A(x)∼x

implies

 A_1(x)=int_0^xA(t)dt∼1/2x^2

for any A(x). The converse is false, but can be made into a correct Tauberian theorem if A(x) is subjected to an appropriate additional condition (Hardy 1999, p. 46).


See also

Tauberian Theorem

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References

Hardy, G. H. Ramanujan: Twelve Lectures on Subjects Suggested by His Life and Work, 3rd ed. New York: Chelsea, p. 46, 1999.

Referenced on Wolfram|Alpha

Abelian Theorem

Cite this as:

Weisstein, Eric W. "Abelian Theorem." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/AbelianTheorem.html

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