2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/197602Nonlinear Schrödinger equation (with the Schwarzian initial data) is important in nonlinear optics, Bose condensation and in the theory of strongly correlated electrons. The asymptotic solutions in the region $x/t={\cal O}(1)$, $t\to\infty$, can be represented as a double series in $t^{-1}$ and $\ln t$. Our current purpose is the description of the asymptotics of the coefficients of the series.11 pages, LaTeXExactly Solvable and Integrable SystemsHigh Energy Physics - TheoryMathematical Physicstext