Proceedings of the 2024 Annual ACM-SIAM Symposium on Discrete Algorithms (SODA)
Proceedings of the 2024 Annual ACM-SIAM Symposium on Discrete Algorithms (SODA)
复制标题
2024 年年度 ACM-SIAM 离散算法研讨会 (SODA) 论文集
DOI:
10.1137/1.9781611977912.138
复制
发表时间:
2024
期刊:
影响因子:
--
通讯作者:
Dong R
中科院分区:
文献类型:
--
作者:
Dong R
LetGbe a unitriangular matrix group of nilpotency class at most ten. We show that the Identity Problem (does a semigroup contain the identity matrix?) and the Group Problem (is a semigroup a group?) are decidable in polynomial time for finitely generated subsemigroups ofG. Our decidability results also hold whenGis an arbitrary finitely generated nilpotent group of class at most ten. This extends earlier work of Babai et al. on commutative matrix groups (SODA’96) and work of Bell et al. onSL(2, ℤ) (SODA’17). Furthermore, we formulate a sufficient condition for the generalization of our results to nilpotent groups of classd> 10. For every suchd,we exhibit an effective procedure that verifies this condition in case it is true.