2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/47028We propose a systematic approximation scheme for solving GLAP evolution equations at small Bjorken-$x$. The approximate solutions interpolate smoothly between hard (singular as $x^{-(1+λ)}$, $λ> 0$) and soft (singular at most as $x^{-1}$) initial conditions and may be applied in a wide range of $Q^2$. The small-$x$ behavior of $F_2^p(x,Q^2)$ which is extracted from a fit to HERA data agrees with results from a global fit.15 pages, Latex, including 4 figuresHigh Energy Physics - Phenomenologytext