Knot at Lunch on September 18 2008

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Dear Knot at Lunch People,

We will have our next lunch on Thursday September 18, at the (new and maybe temporary) usual place, the seminar room on the 10th floor of 215 Huron St., at 12 noon.

As always, please bring brown-bag lunch and fresh ideas. The agenda: Krzysztof Putyra will be telling us about Odd Khovanov Homology.

Further information about this Knot at Lunch meeting may be posted later at

As always, if you know anyone I should add to this mailing list or if you wish to be removed from this mailing list please let me know. To prevent junk accumulation in mailboxes, I will actively remove inactive people unless they request otherwise.



Some Content

We followed Krzysztof's handout from See also the blackboard shots at BBS/Putyra-080918-130336.jpg.

Note that the condition in the handout is not necessary! It is enough that be invertible. Note also that contrary to the handout, it is not known that the simultaneous negation of all variables acts trivially on homology.