#### Vol. 4, No. 8, 2010

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Remarks on modular symbols for Maass wave forms

### Yuri I. Manin

Vol. 4 (2010), No. 8, 1091–1114
##### Abstract

In this paper I introduce modular symbols for Maass wave cusp forms. They appear in the guise of finitely additive functions on the boolean algebra generated by intervals with nonpositive rational ends, with values in analytic functions (pseudomeasures in the sense of Manin and Marcolli). We explain the basic issues and draw an analogy with the $p$-adic case. We then construct the new modular symbols, followed by the related Lévy–Mellin transforms. This work builds on the fundamental study of Lewis and Zagier (2001).

 To Professor F. Hirzebruch, with friendship and admiration, for his anniversary.
##### Keywords
Maass modular forms, modular symbols
Primary: 11F37
##### Milestones
Received: 12 January 2010
Accepted: 1 October 2010
Published: 24 February 2011
##### Authors
 Yuri I. Manin Max-Planck-Institut für Mathematik Vivatsgasse 7 D-53111 Bonn Germany Department of Mathematics Northwestern University Evanston, IL 60208-2730 United States