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2003-02-17
The Dehn Function of PSL(2,Z[1/p])
Jennifer Taback
文献摘要
We show that PSL(2,Z[1/p]) admits a combing with bounded asynchronous width, and use this combing to show that PSL(2,Z[1/p]) has an exponential Dehn function. As a corollary, PSL(2,Z[1/p]) has solvable word problem and is not an automatic group.
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