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University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Modular linear differential operators and their classification

## Modular linear differential operators and their classificationAdd to your list(s) Download to your calendar using vCal - Don Zagier (Max-Planck-Institut für Mathematik, Bonn)
- Monday 22 August 2022, 10:00-11:00
- Seminar Room 1, Newton Institute.
If you have a question about this talk, please contact nobody. NC2W02 - Crossing the bridge: New connections in number theory and physics Modular linear differential equations (MLDEs) have arisen in several different contexts in mathematics and mathematical physics in recent years. Perhapsthe first example, which will be described briefly, was the second-order LDE f”(z) – (k+1)/6 E_2(z) f’(z) + k(k+1)/12 E_2’(z) f(z) = 0 that arose in work of Kaneko and myself on supersingular j-invariants incharacteristi p, but more recently they have become important in thetheory of vertex operator algebras, where they often give non-trivial information about the properties (or sometimes non-existence) of VOAsof given type and given central charge. The talk will describe recent jointwork with K. Nagatomo and Y. Sakai giving descriptions of all MLD Os (forthe full modular group and other lattices in SL(2,R) ) in terms of Rankin-Cohen brackets and in terms of quasimodular forms. All notions, includingthe definitions of modular and quasimodular forms, will be reviewed. This talk is part of the Isaac Newton Institute Seminar Series series. ## This talk is included in these lists:- All CMS events
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