. G R ] 1 N ov 2 00 4 RELATIVE DEHN FUNCTIONS OF AMALGAMATED PRODUCTS AND HNN – EXTENSIONS
نویسنده
چکیده
We obtain an upper bound for relative Dehn functions of amalgamated products and HNN–extensions with respect to certain collections of subgroups. Our main results generalize the combination theorems for relatively hyperbolic groups proved by Dahmani.
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