• Title/Summary/Keyword: mock theta functions

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PARTIAL SECOND ORDER MOCK THETA FUNCTIONS, THEIR EXPANSIONS AND PADE APPROXIMANTS

  • Srivastava, Bhaskar
    • Journal of the Korean Mathematical Society
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    • v.44 no.4
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    • pp.767-777
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    • 2007
  • By proving a summation formula, we enumerate the expansions for the mock theta functions of order 2 in terms of partial mock theta functions of order 2, 3 and 6. We show a relation between Ramanujan's ${\mu}(q)$-function and his sixth order mock theta functions. In addition, we also give the continued fraction representation for ${\mu}(q)$ and 2nd order mock theta functions and $Pad\acute{e}$ approximants.

A STUDY OF THE BILATERAL FORM OF THE MOCK THETA FUNCTIONS OF ORDER EIGHT

  • Srivastava, Bhaskar
    • Journal of the Chungcheong Mathematical Society
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    • v.18 no.2
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    • pp.117-129
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    • 2005
  • We give a generalization of bilateral mock theta functions of order eight and show that they are $F_q$-functions. We also give an integral representation for these functions. We give a relation between mock theta functions of the first set and bilateral mock theta functions of the second set.

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A Note on Certain Properties of Mock Theta Functions of Order Eight

  • Srivastava, Pankaj;Wahidi, Anwar Jahan
    • Kyungpook Mathematical Journal
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    • v.54 no.2
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    • pp.249-262
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    • 2014
  • In this paper, we have developed a non-homogeneous q-difference equation of first order for the generalized Mock theta function of order eight and besides these established limiting case of Mock theta functions of order eight. We have also established identities for Partial Mock theta function and Mock theta function of order eight and provided a number of cases of the identities.

QUANTUM MODULARITY OF MOCK THETA FUNCTIONS OF ORDER 2

  • Kang, Soon-Yi
    • Korean Journal of Mathematics
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    • v.25 no.1
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    • pp.87-97
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    • 2017
  • In [9], we computed shadows of the second order mock theta functions and showed that they are essentially same with the shadow of a mock theta function related to the Mathieu moonshine phenomenon. In this paper, we further survey the second order mock theta functions on their quantum modularity and their behavior in the lower half plane.

MOCK THETA FUNCTIONS OF ORDER 2 AND THEIR SHADOW COMPUTATIONS

  • Kang, Soon-Yi;Swisher, Holly
    • Bulletin of the Korean Mathematical Society
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    • v.54 no.6
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    • pp.2155-2163
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    • 2017
  • Zwegers showed that a mock theta function can be completed to form essentially a real analytic modular form of weight 1/2 by adding a period integral of a certain weight 3/2 unary theta series. This theta series is related to the holomorphic modular form called the shadow of the mock theta function. In this paper, we discuss the computation of shadows of the second order mock theta functions and show that they share the same shadow with a mock theta function which appears in the Mathieu moonshine phenomenon.

A Note on Continued Fractions and Mock Theta Functions

  • Srivastava, Pankaj;Gupta, Priya
    • Kyungpook Mathematical Journal
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    • v.56 no.1
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    • pp.173-184
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    • 2016
  • Mock theta functions are the most interesting topic mentioned in Ramanujan's Lost Notebook, due to its emerging application in the field of Number theory, Quantum invariants theory and etc. In the present research articles we have made an attempt to develop continued fractions representation of all the existing Mock theta functions.

Modular Tranformations for Ramanujan's Tenth Order Mock Theta Functions

  • Srivastava, Bhaskar
    • Kyungpook Mathematical Journal
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    • v.45 no.2
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    • pp.211-220
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    • 2005
  • In this paper we obtain the transformations of the Ramanujan's tenth order mock theta functions under the modular group generators ${\tau}\;{\rightarrow}\;{\tau}\;+\;1\;and\;{\tau}\;{\rightarrow}\;-1/ {\tau}\;where\;q\;=\;e^{{\pi}it}$.

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