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ON THE HECKE EQUIVARIANCE OF THE BORCHERDS ISOMORPHISM

Published online by Cambridge University Press:  30 January 2006

P. GUERZHOY
Affiliation:
Department of Mathematics, Temple University, 1805 N. Broad Str., Philadelphia, PA 19122, [email protected]
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Abstract

The Borcherds isomorphism is proved to be Hecke equivariant if one considers multiplicative Hecke operators acting on the integral weight meromorphic modular forms. This answers a part of a question of Borcherds (see ‘Automorphic forms on ${\rm O}_{s+2,2}(R)$ and infinite products’, Invent. Math. 120 (1995) 161–213, 17.10), using his suggestion to define the multiplicative Hecke operators.

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Type
Papers
Copyright
The London Mathematical Society 2006

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Footnotes

Partially supported by NSF grant DMS-0501225.