The Membership Problem for Hypergeometric Sequences with Quadratic Parameters
The Membership Problem for Hypergeometric Sequences with Quadratic Parameters
复制标题
具有二次参数的超几何序列的隶属度问题
DOI:
10.1145/3597066.3597121
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Kenison G
中科院分区:
文献类型:
--
作者:
Kenison G
Hypergeometric sequences are rational-valued sequences that satisfy first-order linear recurrence relations with polynomial coefficients; that is, a hypergeometric sequence is one that satisfies a recurrence of the form f(n)un = g(n)un − 1 where .In this paper, we consider the Membership Problem for hypergeometric sequences: given a hypergeometric sequence and a target value , determine whether un = t for some index n. We establish decidability of the Membership Problem under the assumption that either (i) f and g have distinct splitting fields or (ii) f and g are monic polynomials that both split over a quadratic extension of . Our results are based on an analysis of the prime divisors of polynomial sequences and appearing in the recurrence relation.
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DOI:
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期刊:
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