Characters of modules over negative rank-2 Borcherds-Kac-Moody Lie algebras

Souvik Pal, Supravat Sarkar, G. Krishna Teja

Let $\mathfrak{g}=\mathfrak{g}(A)$ be the Borcherds-Kac-Moody Lie algebra (BKM LA), corresponding to a BKM Cartan matrix $A$ filled by negative integers. Let $P^+\subset \mathfrak{…