Geodesic
NOTE ON A PAPER OF J. HOFFSTEIN
Glasgow mathematical journal, Tome 49 (2007) no. 2, pp. 243-255

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The concept of a metaplectic form was introduced about 40 years ago by T. Kubota. He showed how Jacobi-Legendre symbols of arbitrary order give rise to characters of arithmetic groups. Metaplectic forms are the automorphic forms with these characters. Kubota also showed how higher analogues of the classical theta functions could be constructed using Selberg's theory of Eisenstein series. Unfortunately many aspects of these generalized theta series are still unknown, for example, their Fourier coefficients. The analogues in the case of function fields over finite fields can in principle be calculated explicitly and this was done first by J. Hoffstein in the case of a rational function field. Here we shall return to his calculations and clarify a number of aspects of them, some of which are important for recent developments.
DOI : 10.1017/S0017089507003540
Mots-clés : 11F27, 11L05, 11T24 
PATTERSON, S. J. NOTE ON A PAPER OF J. HOFFSTEIN. Glasgow mathematical journal, Tome 49 (2007) no. 2, pp. 243-255. doi: 10.1017/S0017089507003540
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