scholarly journals The Bruinier–Funke Pairing and the Orthogonal Complement of Unary Theta Functions

2017 ◽  
pp. 139-157
Author(s):  
Ben Kane ◽  
Siu Hang Man
Keyword(s):  
Theta Functions ◽  
Orthogonal Complement

Dynamic Modeling of Vacuum Robots Based on Natural Orthogonal Complement

ROBOT ◽  
2012 ◽  
Vol 34 (6) ◽  
pp. 730 ◽  
Author(s):  
Yuchuan HUANG ◽  
Daokui QU ◽  
Fang XU
Keyword(s):  
Dynamic Modeling ◽  
Orthogonal Complement

scholarly journals Second-order integrable Lagrangians and WDVV equations

2021 ◽  
Vol 111 (2) ◽  
Author(s):  
E. V. Ferapontov ◽  
M. V. Pavlov ◽  
Lingling Xue
Keyword(s):  
Lagrangian Density ◽  
Theta Functions ◽  
Second Order ◽  
Elementary Functions ◽  
Lagrange Equations ◽  
Wdvv Equations ◽  
Integrability Conditions ◽  
Jacobi Theta Functions

AbstractWe investigate the integrability of Euler–Lagrange equations associated with 2D second-order Lagrangians of the form $$\begin{aligned} \int f(u_{xx},u_{xy},u_{yy})\ \mathrm{d}x\mathrm{d}y. \end{aligned}$$ ∫ f ( u xx , u xy , u yy ) d x d y . By deriving integrability conditions for the Lagrangian density f, examples of integrable Lagrangians expressible via elementary functions, Jacobi theta functions and dilogarithms are constructed. A link of second-order integrable Lagrangians to WDVV equations is established. Generalisations to 3D second-order integrable Lagrangians are also discussed.

scholarly journals Higher depth mock theta functions and q-hypergeometric series

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Joshua Males ◽  
Andreas Mono ◽  
Larry Rolen
Keyword(s):  
Theta Function ◽  
Modular Forms ◽  
Hypergeometric Series ◽  
Theta Functions ◽  
Mock Theta Function ◽  
Mock Theta Functions ◽  
Maass Forms ◽  
Mock Modular Forms ◽  
Harmonic Maass Forms

Abstract In the theory of harmonic Maaß forms and mock modular forms, mock theta functions are distinguished examples which arose from q-hypergeometric examples of Ramanujan. Recently, there has been a body of work on higher depth mock modular forms. Here, we introduce distinguished examples of these forms, which we call higher depth mock theta functions, and develop q-hypergeometric expressions for them. We provide three examples of mock theta functions of depth two, each arising by multiplying a classical mock theta function with a certain specialization of a universal mock theta function. In addition, we give their modular completions, and relate each to a q-hypergeometric series.

Trigonometric sums through Ramanujan’s theory of theta functions

2021 ◽  
Author(s):  
K. N. Harshitha ◽  
K. R. Vasuki ◽  
M. V. Yathirajsharma
Keyword(s):  
Theta Functions ◽  
Trigonometric Sums

scholarly journals Some circular summation formulas for theta functions

2013 ◽  
Vol 2013 (1) ◽  
pp. 59 ◽  
Author(s):  
Yi Cai ◽  
Si Chen ◽  
Qiu-Ming Luo
Keyword(s):  
Theta Functions ◽  
Summation Formulas
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