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Contact cohomology of the projective plane
- American Journal of Mathematics
- Johns Hopkins University Press
- Volume 121, Number 1, February 1999
- pp. 73-96
- 10.1353/ajm.1999.0004
- Article
- Additional Information
We construct an associative ring which is a deformation of the quantum cohomology ring of the projective plane. Just as the quantum cohomology encodes the incidence characteristic numbers of rational plane curves, the contact cohomology encodes the tangency characteristic numbers.