Hostname: page-component-848d4c4894-75dct Total loading time: 0 Render date: 2024-05-06T04:39:36.261Z Has data issue: false hasContentIssue false

A quasi-theta product in Ramanujan's lost notebook

Published online by Cambridge University Press:  26 June 2003

BRUCE C. BERNDT
Affiliation:
Department of Mathematics, University of Illinois, 1409 West Green Street, Urbana, IL 61801, U.S.A. e-mail: berndt@math.uiuc.edu
HENG HUAT CHAN
Affiliation:
Department of Mathematics, National University of Singapore, 2 Science Dr. 2, Singapore 117543, Republic of Singapore. e-mail: chanhh@math.nus.edu.sg
ALEXANDRU ZAHARESCU
Affiliation:
Department of Mathematics, University of Illinois, 1409 West Green Street, Urbana, IL 61801, U.S.A. e-mail: zaharesc@math.uiuc.edu

Abstract

On page 209 of his lost notebook, Ramanujan records an unusual product formula, reminiscent of a product of theta functions. The formula involves hypergeometric functions and has a connection with elliptic functions. In this paper, we prove the formula, offer some generalizations, and indicate some further connections with Ramanujan's work.

Type
Research Article
Copyright
2003 Cambridge Philosophical Society

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)