Electronic Journal of Differential Equations, Vol. 2005(2005), No. 64, pp. 1-7. Title: Existence of solutions for semilinear nonlocal Cauchy problems in Banach spaces Author: Xingmei Xue (Southeast Univ., Nanjing, China) Abstract: In this paper, we study a semilinear differential equations with nonlocal initial conditions in Banach spaces. We derive conditions for $f$, $T(t)$, and $g$ for the existence of mild solutions. Submitted April 26, 2005. Published June 23, 2005. Math Subject Classifications: 34G10,47D06. Key Words: Semilinear differential equation; nonlocal initial condition; completely continuous operator