Subexponential Computation of Truncated Theta Series

ABSTRACT.  We describe an algorithm to compute in $O(e^{c\sqrt{ k\log k}})$ binary operations, for some absolute constant $c>0$, expressions like $\sum_{1\leq n\leq 2^\alpha} e^{\frac{2\pi i n^2}{2^k}} n^a$ and $\sum_{\substack{1\leq n\leq 2^\alpha\\ 1\leq m\leq...

Anti fuzzy k-ideals of ordered semirings

Abstract In this paper we introduce the notion of anti fuzzy ideals, anti fuzzy k−ideals of ordered semirings and we study the properties of anti fuzzy ideals, anti fuzzy k−ideals, homomorphic and anti homomorphic image and pre-image of fuzzy ideals, anti fuzzy ideals...