Eccles, Peter J. and Grant, Mark (2012) SELF-INTERSECTIONS OF IMMERSIONS AND STEENROD OPERATIONS. Acta Mathematica Hungarica. pp. 1-10. ISSN 1588-2632
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Abstract
We present a formula describing the action of a gener- alised Steenrod operation of Z2-type [14] on the cohomology class represented by a proper self-transverse immersion f : M # X. Our formula depends only on the Umkehr map, the characteris- tic classes of the normal bundle, and the class represented by the double point immersion of f. This generalises a classical result of R. Thom [13]: If 2 Hk(X;Z2) is the ordinary cohomology class represented by f : M # X, then Sqi() = fwi(f ).
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Immersion, Self-intersections, Steenrod-tom Dieck op- erations, Steenrod squares, geometric cobordism. |
| Subjects: | MSC 2010, the AMS's Mathematics Subject Classification > 55 Algebraic topology MSC 2010, the AMS's Mathematics Subject Classification > 57 Manifolds and cell complexes |
| Depositing User: | Ms Lucy van Russelt |
| Date Deposited: | 18 Mar 2012 |
| Last Modified: | 20 Oct 2017 14:13 |
| URI: | https://eprints.maths.manchester.ac.uk/id/eprint/1791 |
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