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A proof of Ibukiyama's conjecture on Siegel modular forms of half-integral weight and of degree 2

JAN . 21 2021
In 2006, Ibukiyama conjectured that there is a linear isomorphism between a space of Siegel cusp forms of degree 2 of integral weight and that of half-integral weight. With Arthur's multiplicity formula on the odd special orthogonal group SO(5) and Gan-Ichino's multiplicity formula on the metaplectic group Mp(4), Ibukiyama's conjecture can be proven in a representation theoretic way.

Speaker: Hiroshi Ishimoto (Kyoto University)

Time: 15:00-16:00, 
January 21

Zoom Link: https://zoom.com.cn/j/68649455267?pwd=RjZ1RXNZRGxIVkM5cnIzd3pmVnBjdz09

ID: 68649455267

Password: 376422

Source: School of Mathematical Sciences