Notes for AKT-090922/0:03:53

Introducing the Alexander polynomial, (one of the many) definition:

1. Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle A(O^k) = \delta_{k,1} }
2. $A(L_{+})-A(L_{-})=zA(L_{0})$

i.e. it's a special case of Conway polynomial satisfying a special parametrization.