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Abstract. I will describe an invariant of tangles with values in wheels, almost generalize it to some balloons, and then tell you why I care. Spoilers: tangles are you know what, wheels are linear combinations of cyclic words in some alphabet, balloons are 2-knots, and one reason I care is because quantum field theory predicts more than I can actually get (but also less).
Handout:
Wheels.html,
Wheels.pdf,
Wheels.png.
Talk video:
Sources: pensieve.