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math.GR2004
Some small cancellation properties of random groups
Yann Ollivier
We work in the density model of random groups. We prove that they satisfy an isoperimetric inequality with sharp constant depending upon the density parameter . This impl…
math.GR2004
Kazhdan groups with infinite outer automorphism group
Yann Ollivier, Daniel T. Wise
For each countable group we produce a short exact sequence where is f.g. and has a graphical presentation and is f.g. and satisfies…
math.GR2004
Growth exponent of generic groups
Yann Ollivier
Grigorchuk and de la Harpe asked if there are many groups with growth exponent close to that of the free group with the same number of generators. We prove that this is in fact the…