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Results tagged with mathematics
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user 324133
DO NOT USE THIS TAG just because your question involves math! If your question is on simplification of a mathematical expression, please ask it at math.stackexchange.com The mathematics tag covers non-applied pure mathematical disciplines that are traditionally not part of the mathematical physics curriculum, such as, e.g., number theory, category theory, algebraic geometry, general topology, algebraic topology, etc.
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Classifying projective representations
(i): $\hat{\tilde{G}}$ here means universal central extensions of $\tilde{G}$. That is, if $\hat{\tilde{G'}}$ if another central extension of $\tilde{G}$ (by the same group $\mathbb{R}$) then there ex …
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