Generating the surface mapping class group by two elements
Mustafa Korkmaz
Abstract
Open-access reader
Mustafa Korkmaz
Abstract
Open-access reader
Wajnryb proved that the mapping class group of an orientable surface is generated by two elements. We prove that one of these generators can be taken as a Dehn twist. We also prove that the extended mapping class group is generated by two elements, again one of which is a Dehn twist. Another result we prove is that the mapping class groups are also generated by two elements of finite order.
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Wajnryb proved that the mapping class group of an orientable surface is generated by two elements. We prove that one of these generators can be taken as a Dehn twist. We also prove that the extended mapping class group is generated by two elements, again one of which is a Dehn twist. Another result we prove is that the mapping class groups are also generated by two elements of finite order.
Key concepts: Mapping class group, Group (periodic table), Class (philosophy), Surface (topology), Twist, Order (exchange), Mathematics, Combinatorics