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math.GR2003
On quasi-separative semigroups
Yu. I. Krasilnikova, B. V. Novikov
We built some congruences on semigroups, from where a decomposition of quasi-separative semigroups was obtained.
math.GR2002★ 3 cited
The Dehn Function of Richard Thompson's Group F is Quadratic
Victor Guba
We prove that the Dehn function (that is, the smallest isoperimetric function) of the Richard Thompson's group F is quadratic.