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0111 · Nov 201519922001200920182026
1 result for “W-graphs”
The normal closure of a power of a half-twist has infinite index in the mapping class group of a punctured spheremath.GR

Paper shows infinite index for normal closure of half-twist powers in mapping class group.

problem Infinite index of normal closure of half-twist powers in mapping class group.
method Reformulated Jones representation using Hecke algebras and W-graphs.
result Normal closure of mth power of half-twist has infinite index in mapping class group of punctured sphere.
mapping class grouphalf-twistinfinite indexW-graphsHecke algebras
2015-11-09abs ↗pdf ↗