Kapranov's approach to Rozhansky-Witten invariants requires
interpreting Atiyah class of a holomorphic symplectic manifold as a product in
a "Lie algebra". We will discuss whether this "Lie algebra" is "simple",
i.e., whether it admits a specialization from Vogel's universal simple
Lie algebra. In the case of K# surfaces, the answer depends on the symmetric plurigenera
of the surface.
Links:
[1] https://www.mpim-bonn.mpg.de/taxonomy/term/39
[2] https://www.mpim-bonn.mpg.de/node/3444
[3] https://www.mpim-bonn.mpg.de/node/5312