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2 votes

"canonical" framing of 3-manifolds

This is maybe not the answer you're looking for, but it's certainly too long for a comment. First, there's no contradiction here, and nothing too strange. A 2-framing on $M$ is a framing of $TM\oplus ...
Marco Golla's user avatar
  • 9,959
1 vote

Casson's knot invariant

I'm not sure that this directly answers your question, but section 3 of this paper by Morita might have something useful. He describes the Casson knot invariant in terms of the Alexander polynomial ...
Chase's user avatar
  • 11

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