## Abstract A generalized type of graph covering, called a βWrapped quasicoveringβ (wqc) is defined. If __K, L__ are graphs dually embedded in an orientable surface __S__, then we may lift these embeddings to embeddings of dual graphs KΜ,LΜ in orientable surfaces SΜ, such that SΜ are branched cover
A non-duality theorem for finite groups
β Scribed by John G Thompson
- Publisher
- Elsevier Science
- Year
- 1970
- Tongue
- English
- Weight
- 214 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0021-8693
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