A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf
.
Operations on Hypermaps, and Outer Automorphisms
1988
European journal of combinatorics (Print)
We present a group f), isomorphic to PGL(2, Il), of operations on hypermaps, and a group D, isomorphic to GL(2, Il), of operations on oriented hypermaps without boundary. These are induced by the group of automorphisms of a certain group G whose transitive permutation representations correspond to hypermaps.
doi:10.1016/s0195-6698(88)80052-0
fatcat:i5mwonuy6fcvdbhzhlgfsptdiq