GSp(4) is an algebraic group which plays an important and pivotal role in contemporary research in automorphic forms and representations. Siegel modular forms of degree two are the fundamental example of automorphic forms for GSp(4), and have, or are expected to have, applications to number theoretic topics such as abelian surfaces and four dimensional Galois representations. Since these modular forms are the next case in complexity after classical modular forms, the theory of automorphic forms and representations of GSp(4) is a vibrant area of research which allows for both in-depth progress and the discovery of new phenomena. is a freely accessible database on the World Wide Web about the existing literature on GSp(4). At maturity, this database will contain the complete bibliographic references for the relevant published literature on GSp(4), and will also include information and links to new and unpublished manuscripts that are only available electronically or otherwise difficult to locate or access. Entries and changes to the database are made on a continual basis.

This database is funded by the National Science Foundation through awards #0454809 and #0400837 to Ralf Schmidt, University of Oklahoma and Brooks Roberts, University of Idaho. Support is also provided by the Department of Mathematics of the University of Oklahoma. The web design interface was created by Kreg Hamburger and the backend database was designed by Gavin Nipper. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.

Using the Database

The database can be used in four ways. First, the entries of the database can be browsed by topic using the Category Tree. Second, the works of authors and their web pages can accessed using the Author List. Third, the Statistics Table table can be examined to obtain an interesting and temporal view of the items of the database. Finally, searches of the database can be executed using the Basic Search at the top of this page or through the Advanced Search.


02-14-2007. The database is now open. Though many entries and classifications have been made, and will continue to be made on a daily basis, there is still much to do. Thus, we especially encourage suggestions for improvements. For example, if you are an author and would like some of your papers added to the database, or changes made in the classifications of your works, please send email to or You can easily refer to a work in the database by using its ID number; this is the number that appears when moving the mouse over a title on a search results page (try this example).