May. 20th, 2005

stoutfellow: Joker (Default)
I'm going to try to explain this next bit without any pictures. That may be a mistake; the texts I've seen on the subject all come profusely supplied with diagrams. In particular, the "Reidemeister moves" I try to describe below are usually depicted rather than described. I hope I've made things clear enough; if not, it may help to play around a bit with rubber bands and bits of string. (If it still isn't clear, feel free to complain; I'm willing to try again...)

ExpandFrom Three To Two )

Deep breath

Okay. With that in place, we can go on to the problem of constructing invariants. Stay tuned, if you're still interested.

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stoutfellow: Joker (Default)
stoutfellow

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