ON ``MIXED'' MODULAR EQUATIONS OF DEGREE $21$

Print ISSN: 0972-7752 | Online ISSN: 2582-0850 | Total Downloads : 159

Volume : 17 , Issue : 1
DOI:
Author :
Vijay Yadav (Department of Mathematics, S. P. D. T. College, Andheri (E), Mumbai - 400059, Maharashtra, INDIA)
S. Chandankumar (Department of Mathematics and Statistics, M. S. Ramaiah University of Applied Sciences, Peenya Campus, Bengaluru - 560058, Karnataka, INDIA)

Abstract

In the proposed work, we establish a total of six new $P$--$Q$ modular equations involving theta--function $f(-q)$ with moduli of orders 1, 3, 7 and 21. These equations can be regarded as modular identities in the alternate theory of signature 3. As a consequence, several values of quotients of theta--function are evaluated.

Keywords and Phrases

Modular equations, Theta-functions.

A.M.S. subject classification

33D15, 33E20, 11F20, 11F27.

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