The Dehn function of SL(n, Z)
The Dehn function of SL(n, Z)
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DOI:
10.4007/annals.2013.177.3.4
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发表时间:
2013-05-01
影响因子:
4.9
通讯作者:
Young, Robert
中科院分区:
文献类型:
--
作者:
Young, Robert
We prove that when n >= 5, the Dehn function of SL(n; Z) is quadratic. The proof involves decomposing a disc in SL(n; R)/SO(n) into triangles of varying sizes. By mapping these triangles into SL(n; Z) and replacing large elementary matrices by "shortcuts," we obtain words of a particular form, and we use combinatorial techniques to fill these loops.