BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Hiroshi Ishimoto (Kyoto University) DTSTART:20210121T070000Z DTEND:20210121T080000Z DTSTAMP:20260423T024019Z UID:POINTS/18 DESCRIPTION:Title: A proof of Ibukiyama's conjecture on Siegel modular forms of half-integra l weight and of degree 2\nby Hiroshi Ishimoto (Kyoto University) as pa rt of POINTS - Peking Online International Number Theory Seminar\n\n\nAbst ract\nIn 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 $\\mathrm{SO}(5)$ and Gan-Ichino's multiplic ity formula on the metaplectic group $\\mathrm{Mp}(4)$\, Ibukiyama's conj ecture can be proven in a representation theoretic way.\n\nZoom Link: http s://zoom.com.cn/j/68649455267?pwd=RjZ1RXNZRGxIVkM5cnIzd3pmVnBjdz09\n\nID: 686 4945 5267\n\nPassword: 376422\n LOCATION:https://researchseminars.org/talk/POINTS/18/ END:VEVENT END:VCALENDAR