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**Abstract.** I will describe some very good formulas for a
*(matrix plus scalar)*-valued extension of the Alexander
polynnomial to tangles, then say that everything extends to virtual
tangles, then roughly to simply knotted balloons and hoops in 4D,
then the target space extends to *(free Lie algebras plus
cyclic words)*, and the result is a universal finite type of the knotted
objects in its domain. Taking a cue from the BF topological quantum field
theory, everything should extend (with some modifications) to arbitrary
codimension-2 knots in arbitrary dimension and in particular, to arbitrary
2-knots in 4D. But what is really going on is still a mystery.

**Handout:**
GoodFormulas.html,
GoodFormulas.pdf,
GoodFormulas.png.
There's also a handout booklet: OberwolfachBooklet.pdf.
**Talk video:**

**Sources:** pensieve.