A general formula for Hecke-type false theta functions

التفاصيل البيبلوغرافية
العنوان: A general formula for Hecke-type false theta functions
المؤلفون: Mortenson, Eric T.
المصدر: Algebra i Analiz 36 (2024), no. 1, 195-203
سنة النشر: 2022
المجموعة: Mathematics
مصطلحات موضوعية: Mathematics - Number Theory
الوصف: In recent work where Matsusaka generalizes the relationship between Habiro-type series and false theta functions after Hikami, five families of Hecke-type double-sums of the form \begin{equation*} \left( \sum_{r,s\ge 0 }-\sum_{r,s<0}\right)(-1)^{r+s}x^ry^sq^{a\binom{r}{2}+brs+c\binom{s}{2}}, \end{equation*} where $b^2-ac<0$, are decomposed into sums of products of theta functions and false theta functions. Here we obtain a general formula for such double-sums in terms of theta functions and false theta functions, which subsumes the decompositions of Matsusaka. Our general formula is similar in structure to the case $b^2-ac>0$, where Mortenson and Zwegers obtain a decomposition in terms of Appell functions and theta functions.
Comment: The number of pages is perfect. The title has changed
نوع الوثيقة: Working Paper
URL الوصول: http://arxiv.org/abs/2212.13236
رقم الأكسشن: edsarx.2212.13236
قاعدة البيانات: arXiv