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Title: Hypermap operations of finite order
Authors: Jones, Gareth A. 
Pinto, Daniel 
Issue Date: 2009
Publisher: Centro de Matemática da Universidade de Coimbra
Citation: Pré-Publicações DMUC. 09-24 (2009)
Abstract: Duality and chirality are examples of operations of order 2 on hypermaps. James showed that the groups of all operations on hypermaps and on oriented hypermaps can be identified with the outer automorphism groups Out ∼= PGL2(Z) and Out + ∼= GL2(Z) of the groups = C2 ∗C2 ∗C2 and + = F2. We will consider the elements of finite order in these two groups, and the operations they induce.
Rights: openAccess
Appears in Collections:FCTUC Matemática - Vários

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