  We formulate a conjecture predicting unexpected relationships among the
coefficients of the elliptic expansions of Klein's modular j-function around j
= 0 and j = 1728. Our conjecture is inspired by recent developments in mirror
symmetry, in particular by work of Tu computing categorical enumerative
invariants of matrix factorization categories and by work of Li-Shen-Zhou
computing FJRW invariants of elliptic curves.

Number Theory;Algebraic Geometry;Symplectic Geometry