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What is the definition of the duality group E7(7)?

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What is the definition of the duality group E7(7) that appears in N=8 Supergravity and what are the basics properties? Moreover what is the relation with the Lie Algebra E7?

Please, provide some reference in your answer.

This post imported from StackExchange Physics at 2015-07-20 09:41 (UTC), posted by SE-user Rexcirus

asked Jul 20, 2015 in Resources and References by Rexcirus (20 points) [ no revision ]

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