Geodesic
EQUIVARIANT COMPRESSION OF CERTAIN DIRECT LIMIT GROUPS AND AMALGAMATED FREE PRODUCTS
Glasgow mathematical journal, Tome 58 (2016) no. 3, pp. 739-752

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DOI

We give a means of estimating the equivariant compression of a group G in terms of properties of open subgroups G i ⊂ G whose direct limit is G. Quantifying a result by Gal, we also study the behaviour of the equivariant compression under amalgamated free products G 1∗H G 2 where H is of finite index in both G 1 and G 2. 
CAVE, CHRIS; DREESEN, DENNIS. EQUIVARIANT COMPRESSION OF CERTAIN DIRECT LIMIT GROUPS AND AMALGAMATED FREE PRODUCTS. Glasgow mathematical journal, Tome 58 (2016) no. 3, pp. 739-752. doi: 10.1017/S0017089516000082
@article{10_1017_S0017089516000082,
     author = {CAVE, CHRIS and DREESEN, DENNIS},
     title = {EQUIVARIANT {COMPRESSION} {OF} {CERTAIN} {DIRECT} {LIMIT} {GROUPS} {AND} {AMALGAMATED} {FREE} {PRODUCTS}},
     journal = {Glasgow mathematical journal},
     pages = {739--752},
     year = {2016},
     volume = {58},
     number = {3},
     doi = {10.1017/S0017089516000082},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089516000082/}
}
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%A DREESEN, DENNIS
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%J Glasgow mathematical journal
%D 2016
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