First syzygies of irreducible A-hypergeometric quotients
First syzygies of irreducible A-hypergeometric quotients
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不可约A-超几何商的第一系统
DOI:
10.1016/j.jpaa.2012.04.010
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
Mutsumi Saito
中科院分区:
文献类型:
--
作者:
中平勝子・藤間渉・北島宗雄;中平勝子・北島宗雄;藤間 渉・中平勝子;Mutsumi Saito
An A-hypergeometric system is not irreducible, if its parameter vector is resonant. In this paper, we present a way of computing a finite system of generators of the first syzygy module of an irreducible A-hypergeometric quotient. In particular, if the semigroup generated by A is simplicial and scored, then an explicit system of generators is given.