Hostname: page-component-78c5997874-xbtfd Total loading time: 0 Render date: 2024-11-17T21:22:37.915Z Has data issue: false hasContentIssue false

The equivariant cohomology ring of weighted projective space

Published online by Cambridge University Press:  01 March 2009

ANTHONY BAHRI
Affiliation:
Department of Mathematics, Rider University, Lawrenceville, NJ 08648, U.S.A. e-mail: [email protected]
MATTHIAS FRANZ
Affiliation:
Department of Mathematics, University of Western Ontario, London, ON N6A 5B7, Canada e-mail: [email protected]
NIGEL RAY
Affiliation:
School of Mathematics, University of Manchester, Manchester M13 9PL. e-mail: [email protected]

Abstract

We describe the integral equivariant cohomology ring of a weighted projective space in terms of piecewise polynomials, and thence by generators and relations. We deduce that the ring is a perfect invariant, and prove a Chern class formula for weighted projective bundles.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 2008

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

[1]Al Amrani, A.Cohomological study of weighted projective spaces, S. Sertöz (ed.), Algebraic geometry, Proc. Bilkent Summer School (Ankara 1995). Lect. Notes Pure Appl. Math. 193 (Dekker, 1997), 152.Google Scholar
[2]Allday, C. and Puppe, V.Cohomological Methods in Transformation Groups (Cambridge University Press, 1993).CrossRefGoogle Scholar
[3]Bifet, E., De Concini, C. and Procesi, C.Cohomology of regular embeddings. Adv. Math. 82 (1990), 134.CrossRefGoogle Scholar
[4]Billera, L. J. and Rose, L. L.Modules of piecewise polynomials and their freeness. Math. Z. 209 (1992), 485497.CrossRefGoogle Scholar
[5]Brion, M.Piecewise polynomial functions, convex polytopes and enumerative geometry, P. Pragacz (ed.), Parameter Spaces. Banach Cent. Publ. 36 (Warszawa 1996), 2544.CrossRefGoogle Scholar
[6]Davis, M. W. and Januszkiewicz, T.Convex polytopes, Coxeter orbifolds and torus actions. Duke Math. J. 62 (1991), 417451.CrossRefGoogle Scholar
[7]Dolgachev, I.Weighted projective varieties. Group actions and vector fields. (Vancouver BC, 1981), Lect. Notes in Math. 956 (Springer-Verlag, 1982), 2544.Google Scholar
[8]Franz, M. A topological description of toric varieties. In preparation.Google Scholar
[9]Franz, M. and Puppe, V.Exact cohomology sequences with integral coefficients for torus actions. Transformation Groups 12 (2007), 6576.CrossRefGoogle Scholar
[10]Fulton, W.Introduction to Toric Varieties (Princeton University Press, 1993).CrossRefGoogle Scholar
[11]Goresky, M. and MacPherson, R.On the topology of algebraic torus actions. Algebraic groups Utrecht 1986. Lect. Notes in Math. 1271 (Springer-Verlag, 1987), 7390.CrossRefGoogle Scholar
[12]Kasprzyk, A. M.Toric Fano varieties and convex polytopes. PhD thesis, University of Bath (2006) (available at www.math.unb.ca/~kasprzyk/research/pdf/Thesis.pdf).Google Scholar
[13]Katz, E. and Payne, S. Piecewise polynomials, Minkowski weights and localization on toric varieties. Preprint (2007) (available at arXiv:math/0703672).Google Scholar
[14]Kawasaki, T.Cohomology of twisted projective spaces and lens complexes. Math. Ann. 206 (1973), 243248.CrossRefGoogle Scholar
[15]May, J. P. (ed.) Equivariant Homotopy and Cohomology Theory. CBMS Regional Conference Series in Mathematics 91 (AMS, 1996).Google Scholar
[16]Payne, S.Equivariant Chow cohomology of toric varieties. Math. Res. Lett. 13 (2006), 2941.CrossRefGoogle Scholar