Sum of the Fourier coefficients of SL(3,Z) Hecke Maass forms over quadratics

Sum of the triple divisor function and Fourier coefficients of $SL(3,\mathbb{Z})$ Hecke-Maass forms over quadratics

“…By applying integration by parts j times we obtain (for m 1 , m 2 = 0) that sum over m 1 and m 2 is negligibly small unless m 1 , m 2 ≪ qX ε /X ≪ X ε with Q = X (see Remark 3.1 of [11]).…”