{\it Seiberg-Witten monopole equations}

$$
F^{+} + {\bar M}{\Gamma}M = 0
$$
$$
D{\kern -.1in\slash}\, M = 0
$$


{\it Associativity of the operator product in CFT and TFT}
$$
C_{ijk} {\eta}^{kl} C_{lmn} = C_{mjk} {\eta}^{kl} C_{lin}
$$
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