Electronic Journal of Differential Equations, Vol. 2020 (2020), No. 120, pp. 1-10. Title: Rothe's method for solving semi-linear differential equations with deviating arguments Authors: Darshana Devi (Tezpur Univ., Sonitpur, Assam, India) Duranta Chutia (Tezpur Univ., Sonitpur, Assam, India) Rajib Haloi (Tezpur Univ., Sonitpur, Assam, India) Abstract: We consider a semi-linear differential equation of parabolic type with deviating arguments in a Banach space with uniformly convex dual, and apply Rothe's method to establish the existence and uniqueness of a strong solution. We also include an example as an application of the main result. Submitted October 23, 2020. Published December 10, 2020. Math Subject Classifications: 34G20, 34K30, 35D35, 35K58. Key Words: Strong solution; deviating argument; semigroup of bounded linear operators; semidiscretization method