TY - JOUR ID - Sokołowski2012 LB - Sokołowski2012 AU - Sokołowski, Dariusz TI - On the asymptotic behaviour of solutions to a linear functional equation ST - On the asymptotic behaviour of solutions to a linear functional equation JO - Opuscula Math. JA - Opuscula Math. JF - Opuscula Mathematica PY - 2012 VL - 32 IS - 3 SP - 559 EP - 577 DO - http://dx.doi.org/10.7494/OpMath.2012.32.3.559 UR - http://dx.doi.org/10.7494/OpMath.2012.32.3.559 AB - We investigate the asymptotic behaviour at infinity of solutions of the equation \[\varphi (x) = \int_S \varphi (x+M(s))\sigma(d s).\] We show among others that, under some assumptions, any positive solution of the equation which is integrable on a vicinity of infinity or vanishes at \(+\infty\) tends on some sequence to zero faster than some exponential function, but it does not vanish faster than another such function. KW - linear functional equations and inequalities KW - solutions with a constant sign KW - asymptotic behaviour of solutions SN - 1232-9274 ER -