2 problems

Let $F_{(n,g,m)}$ be the coefficient in the refined free-energy expansion of $m$ $E$-strings, and let $W(E_8)$ act on the lattice variable $\mathfrak{z}$ encoding the $E_8$ flavor…

Let $F_{(n,g,m)}$ denote the refined free energy of $m$ $E$-strings in the massive case, with $W(E_8)$ acting on the $E_8$ flavor variable. A quasi Jacobi form is a Jacobi form all…