More general constructions are given of six-dimensional theories that look at low energy like six-dimensional super Yang-Mills theory.The constructions start with either parallel fivebranes in Type IIB, or M-theory on (C 2 x § 1 )/r for T a suitable finite group.Via these constructions, one can obtain six-dimensional theories with any simple gauge group, and SU(r) theories with any rational theta angle.A matrix construction of these theories is also possible.
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