FRANCESCO L. CHIERA
About linear combinations of Siegel theta series
Received: 24 February 2004
Revised: 15 October 2004
Mathematics Subject Classification (2000): 11E45 - 11E10 - 11F27 - 11F46
Abstract: We give an elementary introduction to theta series from the point of view of the theory of Siegel modular forms and we discuss some results concerning the expression of modular forms for congruence subgroups as linear combinations of theta series of the appropriate level.