Hua's lemma
From Infogalactic: the planetary knowledge core
In mathematics, Hua's lemma,[1] named for Hua Loo-keng, is an estimate for exponential sums.
It states that if P is an integral-valued polynomial of degree k, is a positive real number, and f a real function defined by
then
- ,
where lies on a polygonal line with vertices
References
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