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Distinguishing filling invariants associated to conjugacy in groups
Conan Gillis and Timothy Riley Brick and Corson introduced annular Dehn functions in 1998 to quantify the conjugacy problem for finitely generated groups and gave the fundamental relationships between it, the Dehn function, and the conjugator length function. We furnish the theory with diverse examples groups. In particular, we show that these three invariants are independent---no two of the three functions determine the other.
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