2 papers
math-ph2026
Dynkin diagrams, generalized Nahm sums and 2d CFTs
Kaiwen Sun, Haowu Wang
A folklore conjecture states that the Nahm sum associated with a pair of Dynkin diagrams of type is a modular function. In this paper, we extend this conjecture to Dynkin di…
math.NT2024
There are no extremal eutactic stars other than root systems
Haowu Wang
A eutactic star on an integral lattice is called extremal if it induces a holomorphic Jacobi form of lattice index and singular weight via the theta block. The famous Macdonald ide…