A survey of Magnus representations for mapping class groups and homology cobordisms of surfaces
A survey of Magnus representations for mapping class groups and homology cobordisms of surfaces
This is a survey of Magnus representations with particular emphasis on their applications to mapping class groups and monoids (groups) of homology cobordisms of surfaces. In the first half, we begin by recalling the basics of the Fox calculus and overview Magnus representations for automorphism groups of free groups and …