intersection theory

TQFT: hep-th/9411210 P81 view moduli space as the zero sets of sections of the localization bundle~EOM
(14.9), (14.31) write Thom class (~$e^{-iS}$, partly like a $\delta$-function on zero sets, the rest gives a MQ rep) and projection form (integral: $M\to P$) as path integral: MQ representatives (14.42), (14.54)
eg. Donaldson invariant (15.24), Seiberg-Witten theory
equivariant cohomology