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Multicurves and equivariant cohomology

About this Title

N. P. Strickland, Department of Pure Mathematics, University of Sheffield, Sheffield S3 7RH, United Kingdom

Publication: Memoirs of the American Mathematical Society
Publication Year: 2011; Volume 213, Number 1001
ISBNs: 978-0-8218-4901-9 (print); 978-1-4704-0618-9 (online)
DOI: https://doi.org/10.1090/S0065-9266-2011-00604-0
Published electronically: February 14, 2011
Keywords: Formal group, equivariant cohomology
MSC: Primary 55N20, 55N22, 55N91, 14L05

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Table of Contents

Chapters

  • 1. Introduction
  • 2. Multicurves
  • 3. Differential forms
  • 4. Equivariant projective spaces
  • 5. Equivariant orientability
  • 6. Simple examples
  • 7. Formal groups from algebraic groups
  • 8. Equivariant formal groups of product type
  • 9. Equivariant formal groups over rational rings
  • 10. Equivariant formal groups of pushout type
  • 11. Equivariant Morava $E$-theory
  • 12. A completion theorem
  • 13. Equivariant formal group laws and complex cobordism
  • 14. A counterexample
  • 15. Divisors
  • 16. Embeddings
  • 17. Symmetric powers of multicurves
  • 18. Classification of divisors
  • 19. Local structure of the scheme of divisors
  • 20. Generalised homology of Grassmannians
  • 21. Thom isomorphisms and the projective bundle theorem
  • 22. Duality
  • 23. Further theory of infinite Grassmannians
  • 24. Transfers and the Burnside ring
  • 25. Generalisations

Abstract

Let $A$ be a finite abelian group. We set up an algebraic framework for studying $A$-equivariant complex-orientable cohomology theories in terms of a suitable kind of equivariant formal group. We compute the equivariant cohomology of many spaces in these terms, including projective bundles (and associated Gysin maps), Thom spaces, and infinite Grassmannians.

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