A125705 Genera g such that every orientation-preserving periodic automorphism of the closed orientable surface of genus g has an invariant circle.

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 27, 28, 30, 32, 35, 39, 42, 43, 44, 45, 48, 49, 50, 51, 60, 65, 66, 72, 73, 87, 90, 105

Offset

1,3

Comments

There are no other g with g<=10000.

Links

Table of n, a(n) for n=1..43.

H. Geiges & D. Rattaggi, Periodic Automorphisms of Surfaces: Invariant Circles and Maximal Orders, Experimental Mathematics, vol. 9 (2000).

Crossrefs

Sequence in context: A198343 A342382 A094270 * A154314 A239348 A191881

Adjacent sequences: A125702 A125703 A125704 * A125706 A125707 A125708

Keyword

nonn,nice,more

Author

Alex Fink, Jan 31 2007

Status

approved