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Casson Invariant



References

Akbulut, S. and McCarthy, J. Casson's Invariant for Oriented Homology 3-Spheres--An Exposition. Princeton, NJ: Princeton University Press, 1990.Saveliev, N. Lectures on the Topology of 3-Manifolds: An Introduction to the Casson Invariant. Berlin: de Gruyter, 1999.