The homotopy Thom class of a spherical fibration

Marcum, Howard J.; Randall, Duane

doi:10.1090/S0002-9939-1980-0577773-8

The homotopy Thom class of a spherical fibration
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by Howard J. Marcum and Duane Randall PDF

Proc. Amer. Math. Soc. 80 (1980), 353-358 Request permission

Abstract:

We investigate the following problems. Given a spherical fibration, does the Whitehead square of its homotopy Thorn class vanish? If so, is the homotopy Thom class a cyclic homotopy class?

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