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+====== 2022-10-25, Mina Aganagic, categorification of knot ======
+Talk at MSRI gauge theory workshop.
+==== Khovanov homology and Jones polynomial ====
+Given a knot or link in $\R^3$, Jones produces a 1-variable polynomial $J_K(q)$.
+Khovanov upgraded that polynomial to a bi-graded vector space, and taking Euler characteristics in one grading, put formal variable $q$ in the other grading, recovers Jones polynomial. The construction is very much functorial, compatible with knot cobordism.
+Knot categorification is about constructing maps from the category of colored points on a surface with morphism being merge and isotopy, to the category of representation of quantum groups $U_q(g)$.
+Webster already did this categorification. Here Mina gives a physics and A-model explanation why Webster's story works, and how to make it explicit.
+This talk will not be about super Lie-algebra, or non-simply laced ones, but just the simple ones.
+** Why we have quantum group **
+In 88Witten, Chern-Simon, Hilbert space.
+Conformal blocks, solutions to KZ equations