Three-dimensional maps and subgroup growth.
Three-dimensional maps and subgroup growth.
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DOI:
10.1007/s00229-021-01321-7
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发表时间:
2022
影响因子:
0.6
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中科院分区:
文献类型:
--
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In this paper we derive a generating series for the number of cellular complexes known as pavings or three-dimensional maps, on n darts, thus solving an analogue of Tutte’s problem in dimension three. The generating series we derive also counts free subgroups of index n in via a simple bijection between pavings and finite index subgroups which can be deduced from the action of on the cosets of a given subgroup. We then show that this generating series is non-holonomic. Furthermore, we provide and study the generating series for isomorphism classes of pavings, which correspond to conjugacy classes of free subgroups of finite index in . Computational experiments performed with software designed by the authors provide some statistics about the topology and combinatorics of pavings on darts.
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影响因子:
4.3
作者:
LIENHARDT, P
通讯作者:
LIENHARDT, P
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Arquès, D;Béraud, JF
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Béraud, JF
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Baik, Hyungryul;Petri, Bram;Raimbault, Jean
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