In this talk we consider lifts on the Siegel three fold. Motivated from physics, string theory, it is an interesting question to study these multiplicative (Borcherds lifts) and additive lifts (Saito-Kurokawa lifts) and their coincidence.
Links:
[1] http://www.mpim-bonn.mpg.de/de/taxonomy/term/39
[2] http://www.mpim-bonn.mpg.de/de/node/3444
[3] http://www.mpim-bonn.mpg.de/de/node/246