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On the dual nature of partial theta functions and Appell-Lerch sums. / Mortenson, Eric T.
в: Advances in Mathematics, Том 264, 20.10.2014, стр. 236-260.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - On the dual nature of partial theta functions and Appell-Lerch sums
AU - Mortenson, Eric T.
PY - 2014/10/20
Y1 - 2014/10/20
N2 - In recent work, Hickerson and the author demonstrated that it is useful to think of Appell-Lerch sums as partial theta functions. This notion can be used to relate identities involving partial theta functions with identities involving Appell-Lerch sums. In this sense, Appell-Lerch sums and partial theta functions appear to be dual to each other. This duality theory is not unlike that found by Andrews between various sets of identities of Rogers-Ramanujan type with respect to Baxter's solution to the hard hexagon model of statistical mechanics. As an application we construct bilateral q-series with mixed mock modular behaviour. In subsequent work we see that our bilateral series are well-suited for computing radial limits of Ramanujan's mock theta functions. © 2014 Elsevier Inc.
AB - In recent work, Hickerson and the author demonstrated that it is useful to think of Appell-Lerch sums as partial theta functions. This notion can be used to relate identities involving partial theta functions with identities involving Appell-Lerch sums. In this sense, Appell-Lerch sums and partial theta functions appear to be dual to each other. This duality theory is not unlike that found by Andrews between various sets of identities of Rogers-Ramanujan type with respect to Baxter's solution to the hard hexagon model of statistical mechanics. As an application we construct bilateral q-series with mixed mock modular behaviour. In subsequent work we see that our bilateral series are well-suited for computing radial limits of Ramanujan's mock theta functions. © 2014 Elsevier Inc.
KW - Appell-Lerch sums
KW - Hecke-type double sums
KW - Indefinite theta series
KW - Mock theta functions
KW - Partial theta functions
UR - http://www.scopus.com/inward/record.url?scp=84904884700&partnerID=8YFLogxK
U2 - 10.1016/j.aim.2014.07.018
DO - 10.1016/j.aim.2014.07.018
M3 - Article
AN - SCOPUS:84904884700
VL - 264
SP - 236
EP - 260
JO - Advances in Mathematics
JF - Advances in Mathematics
SN - 0001-8708
ER -
ID: 126317584