Quasi-homomorphisms and stable lengths in mapping class groups
Quasi-homomorphisms and stable lengths in mapping class groups
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映射类群中的拟同态和稳定长度
DOI:
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发表时间:
2003
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通讯作者:
D. Kotschick
中科院分区:
文献类型:
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作者:
D. Kotschick
We give elementary applications of quasi-homomorphisms to growth problems in groups. A particular case concerns the number of torsion elements required to factor a given element in the mapping class group of a surface.