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Questions about half-integral weight modular forms, and more generally automorphic representations associated to metaplectic groups.

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How do modular forms of half-integral weight relate to the (quasi-modular) Eisenstein series?

One of the best-known relations between modular forms of half integral weight and even weight is the Shimura correspondence taking certain weight k+1/2 forms to weight 2k forms. See Koblitz's book or …
Richard Borcherds's user avatar