Inner twists for Siegel modular forms and the images of associated Galois representations

dc.contributor.author	BANERJEE, DEBARGHA	en_US
dc.contributor.author	DEBNATH, RONIT	en_US
dc.date.accessioned	2026-07-20T09:48:14Z
dc.date.available	2026-07-20T09:48:14Z
dc.date.issued	2026-07	en_US
dc.identifier.citation	International Journal of Number Theory	en_US
dc.identifier.issn	1793-0421	en_US
dc.identifier.issn	1793-7310	en_US
dc.identifier.uri	https://doi.org/10.1142/S1793042126501216	en_US
dc.identifier.uri	http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/11350
dc.description.abstract	We study the group of inner twists for Siegel modular forms of genus two. For lifted Siegel modular forms (these are Siegel modular forms obtained from elliptic modular forms by various functorial lifts), we compute the group of inner twists in terms of inner twists of elliptic modular forms. On the other hand, for non-lifted Siegel modular forms, we provide necessary and sufficient conditions for the existence of inner twists in terms of the Lie algebras of the images of Galois representations.	en_US
dc.language.iso	en	en_US
dc.publisher	World Scientific	en_US
dc.subject	Mathematics	en_US
dc.subject	2026-JUL-WEEK3	en_US
dc.subject	TOC-JUL-2026	en_US
dc.subject	2026	en_US
dc.title	Inner twists for Siegel modular forms and the images of associated Galois representations	en_US
dc.type	Article	en_US
dc.contributor.department	Dept. of Mathematics	en_US
dc.identifier.sourcetitle	International Journal of Number Theory	en_US
dc.publication.originofpublisher	Foreign	en_US