Homeomorphisms and the homology of non-orientable surfaces

被引:8
|
作者
Gadgil, S [1 ]
Pancholi, D
机构
[1] Indian Stat Inst, Stat Math Unit, Bangalore 560059, Karnataka, India
[2] Tata Inst Fundamental Res, Sch Math, Bombay 400005, Maharashtra, India
关键词
non-orientable surfaces; Dehn twist; mapping class groups; crosscap slide;
D O I
10.1007/BF02829656
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
We show that, for a closed non-orientable surface F, an automorphism of H, (F, Z) is induced by a homeomorphism of F if and only if it preserves the (mod 2) intersection pairing. We shall also prove the corresponding result for punctured surfaces.
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页码:251 / 257
页数:7
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