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Mock theta functions and Appell–Lerch sums [PDF]

open access: yesJournal of Inequalities and Applications, 2018
Recently, Mortenson (Proc. Edinb. Math. Soc. 4:1–13, 2015) explored the bilateral series in terms of Appell–Lerch sums for the universal mock theta function g2(x,q) $g_{2}{(x,q)}$.
Bin Chen
doaj   +6 more sources

On Ramanujan's definition of mock theta function. [PDF]

open access: yesProc Natl Acad Sci U S A, 2013
In his famous “deathbed” letter, Ramanujan “defined” the notion of a mock theta function and offered some examples of functions he believed satisfied his definition. Very recently, Griffin et al. established for the first time that Ramanujan’s mock theta functions actually satisfy his own definition.
Rhoades RC.
europepmc   +16 more sources

Superconformal algebras and mock theta functions [PDF]

open access: yesJournal of Physics A: Mathematical and Theoretical, 2009
It is known that characters of BPS representations of extended superconformal algebras do not have good modular properties due to extra singular vectors coming from the BPS condition. In order to improve their modular properties we apply the method of Zwegers which has recently been developed to analyze modular properties of mock theta functions.
Eguchi, Tohru, Hikami, Kazuhiro
openaire   +3 more sources

A Mock Theta Function of Second Order [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2009
We consider the second-order mock theta function 𝒟5 (𝑞), which Hikami came across in his work on mathematical physics and quantum invariant of three manifold.
Bhaskar Srivastava
doaj   +2 more sources

MOCK THETA FUNCTIONS AND QUANTUM MODULAR FORMS [PDF]

open access: yesForum of Mathematics, Pi, 2013
Ramanujan’s last letter to Hardy concerns the asymptotic properties of modular forms and his ‘mock theta functions’. For the mock theta function $f(q)$, Ramanujan claims that as $q$ approaches an even-order $2k$ root of unity, we have $$\begin{eqnarray ...
AMANDA FOLSOM   +2 more
doaj   +2 more sources

Recurrence relations connecting mock theta functions and restricted partition functions [PDF]

open access: yesNotes on Number Theory and Discrete Mathematics, 2023
In this paper, we provide some recurrence relations connecting restricted partition functions and mock theta functions. Elementary manipulations are used including Jacobi triple product identity, Euler's pentagonal number theorem, and Ramanujan's theta ...
M. Rana, H. Kaur, K. Garg
doaj   +1 more source

Ramanujan’s mock theta functions [PDF]

open access: yesProceedings of the National Academy of Sciences, 2013
In his famous deathbed letter, Ramanujan introduced the notion of a mock theta function , and he offered some alleged examples. Recent work by Zwegers [Zwegers S (2001) Contemp Math 291:268–277 and Zwegers S (2002) PhD thesis (Univ of Utrecht, Utrecht, The Netherlands)] has elucidated the ...
Griffin, Michael, Ono, Ken, Rolen, Larry
openaire   +2 more sources

Some Special Integer Partitions Generated by a Family of Functions

open access: yesTrends in Computational and Applied Mathematics, 2023
  In this work, inspired by Ramanujan’s fifth order Mock Theta function f1(q), we define a collection of functions and look at them as generating functions for partitions of some integer n containing at least m parts equal to each one of the numbers from
M. L. Matte
doaj   +1 more source

A domain free of the zeros of the partial theta function

open access: yesМатематичні Студії, 2023
The partial theta function is the sum of the series \medskip\centerline{$\displaystyle\theta (q,x):=\sum\nolimits _{j=0}^{\infty}q^{j(j+1)/2}x^j$,} \medskip\noi where $q$ is a real or complex parameter ($|q|
V. Kostov
doaj   +1 more source

Optimal mock Jacobi theta functions

open access: yesAdvances in Mathematics, 2020
We classify the optimal mock Jacobi forms of weight one with rational coefficients. The space they span is thirty-four-dimensional, and admits a distinguished basis parameterized by genus zero groups of isometries of the hyperbolic plane. We show that their Fourier coefficients can be expressed explicitly in terms of singular moduli, and obtain ...
Cheng, M.C.N., Duncan, J.F.R.
openaire   +6 more sources

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