Smooth maps into quaternionic Grassmannians inducing a prescribed 4-form

被引:0
|
作者
Datta, Mahuya [1 ]
机构
[1] Indian Stat Inst, Stat & Math Unit, 203 BT Rd, Kolkata 700108, W Bengal, India
关键词
Principal bundles; Connections; Quaternionic Grassmannians; Symplectic Pontrjagin forms;
D O I
10.1007/s10711-018-0363-0
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Let knGk(Hn) be the Stiefel bundle of quaternionic k-frames in Hn over the the quaternionic Grassmannian Gk(Hn). Let sigma denote the first symplectic Pontrjagin form associated with the universal connection on k We show that every 4-form on a smooth manifold M can be induced from sigma by a smooth map f:MGk(Hn) (for sufficiently large k and n) provided there exists a continuous map Gk(Hn) which pulls back the deRham cohomology class of sigma (referred as the symplectic Pontrjagin class of kn) onto that of omega.
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页码:105 / 114
页数:10
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