Ivanov's presentation conjecture for power subgroups of mapping class groups
Ivanov's presentation conjecture for power subgroups of mapping class groups
Let be a closed surface of genus , let be its mapping class group, and let be the subgroup generated by the -th powers of Dehn twists about all simple closed curves. Let be the infinite set of simple closed curves on , and write for the Dehn twist about . Ivanov's presentation conjecture. For , or , , the group has a presentation with generators , corresponding to for , and relations
for every pair . This is a proposed presentation by braid-type relations, motivated by a question of Ivanov about relations among powers of Dehn twists.
Sources & referencesView supporting material
Primary source
Louis Funar, “On power subgroups of mapping class groups”, arXiv:0910.1493 (2014).
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