Results 21 to 30 of about 199,900 (281)

False theta functions and companions to Capparelli's identities [PDF]

open access: yes, 2015
Capparelli conjectured two modular identities for partitions whose parts satisfy certain gap conditions, where were motivated by the calculation of characters for the standard modules of certain affine Lie algebras and by vertex operator theory.
Bringmann, Kathrin, Mahlburg, Karl
core   +1 more source

Indefinite theta functions for counting attractor backgrounds [PDF]

open access: yes, 2014
In this note, we employ indefinite theta functions to regularize canonical partition functions for single-center dyonic BPS black holes. These partition functions count dyonic degeneracies in the Hilbert space of four-dimensional toroidally compactified ...
Cardoso, Gabriel Lopes   +2 more
core   +3 more sources

A Product of Theta-Functions Analogous to Ramanujan's Remarkable Product of Theta-Functions and Applications

open access: yesJournal of Mathematics, 2013
We define a product lk,n for any positive real numbers k and n involving Ramanujan's theta-functions ϕ(q) and ψ(q) which is analogous to Ramanujan's remarkable product of theta-functions recorded by Ramanujan (1957) and study its several properties.
Nipen Saikia
doaj   +1 more source

Effective Congruences for Mock Theta Functions

open access: yesMathematics, 2013
Let M(q) = ∑c(n) qn be one of Ramanujan’s mock theta functions. We establish the existence of infinitely many linear congruences of the form: c(An + B) ≡ 0 (mod lj) where A is a multiple of l and an auxiliary prime, p.
Heidi Goodson   +3 more
doaj   +1 more source

Radial limits of mock theta functions [PDF]

open access: yes, 2014
Inspired by the original definition of mock theta functions by Ramanujan, a number of authors have considered the question of explicitly determining their behavior at the cusps.
Bringmann, Kathrin, Rolen, Larry
core   +2 more sources

Eisenstein Series Identities Involving the Borweins' Cubic Theta Functions

open access: yesJournal of Applied Mathematics, 2012
Based on the theories of Ramanujan's elliptic functions and the (p, k)-parametrization of theta functions due to Alaca et al. (2006, 2007, 2006) we derive certain Eisenstein series identities involving the Borweins' cubic theta functions with the help of
Ernest X. W. Xia, Olivia X. M. Yao
doaj   +1 more source

Some theorems on the explicit evaluation of Ramanujan's theta-functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2004
Bruce C. Berndt et al. and Soon-Yi Kang have proved many of Ramanujan's formulas for the explicit evaluation of the Rogers-Ramanujan continued fraction and theta-functions in terms of Weber-Ramanujan class invariants.
Nayandeep Deka Baruah, P. Bhattacharyya
doaj   +1 more source

On Entry 8 of Chapter 19 of Ramanujan's Second Notebook [PDF]

open access: yesNotes on Number Theory and Discrete Mathematics
The aim of this paper is to give an alternative proof of Entry 8 of Chapter 19 of Ramanujan's Second Notebook. Further, we deduce certain modular equations of degree 5 as a consequence of Entry 8 of Chapter 19.
K. R. Vasuki, A. Darshan
doaj   +1 more source

Some New θ-I-Locally Closed sets with Respect to an Ideal Topological Spaces

open access: yesRatio Mathematica, 2023
In this paper, we introduce the new notions called \breve{\mathbit{\theta}}-\mathbf{I}-locally closed sets, \breve{\mathbit{\theta}}-\mathbf{I}-locally closed sets and \breve{\mathbit{\theta}}-\mathbf{I}-closed functions and investigated their properties
M Vijayasankari, G Ramkumar
doaj   +1 more source

A Framework for Modular Properties of False Theta Functions

open access: yes, 2019
False theta functions closely resemble ordinary theta functions, however they do not have the modular transformation properties that theta functions have.
Bringmann, Kathrin, Nazaroglu, Caner
core   +1 more source

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