Periods of the <i>j</i> -function along infinite geodesics and mock modular forms
Periods of the <i>j</i> -function along infinite geodesics and mock modular forms
Zagier's well-known work on traces of singular moduli relates the coefficients of certain weakly holomorphic modular forms of weight $1/2$ to traces of values of the modular $j$-function at imaginary quadratic points. A real quadratic analogue was recently studied by Duke, Imamo\=glu, and T\'oth. They showed that the coefficients of …