On Dehn functions and products of groups
On Dehn functions and products of groups
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论群的 Dehn 函数和乘积
DOI:
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发表时间:
1993
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影响因子:
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通讯作者:
S. Brick
中科院分区:
文献类型:
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作者:
S. Brick
If G is a finitely presented group then its Dehn function ― or its isoperimetric inequality ― is of interest. For example, G satisfies a linear isoperimetric inequality iff G is negatively curved (or hyperbolic in the sense of Gromov). Also, if G possesses an automatic structure then G satisfies a quadratic isoperimetric inequality. We investigate the effect of certain natural operations on the Dehn function. We consider direct products, taking subgroups of finite index, free products, amalgamations, and HNN extensions