Mathematical Research Letters

Volume 18 (2011)

Number 1

Crossed product algebras attached to weight one forms

Pages: 139 – 149



Debargha Banerjee (Mathematical Sciences Institute Australian National University, Canberra, ACT 0200, Australia.)

Eknath Ghate (School of Mathematics, TIFR, Homi Bhabha Road, Mumbai 400005, India.)


We completely determine the Brauer class of the crossed product algebra attached to a non-dihedral cusp form of weight one.

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