RT info:eu-repo/semantics/article T1 Hölder regularity for abstract semi-linear fractional differential equations in Banach spaces A1 Cuesta Montero, Eduardo A1 Ponce, Rodrigo K1 A posteriori error estimates; Fractional differential equations; Nonlinear equations; Sectorial operators; Hölder continuity; Optimal regularity AB In the present work the optimal regularity, in the sense of Hölder continuity, of linear and semi-linear abstract fractional differential equations is investigated in the framework of complex Banach spaces. This framework has been considered by the authors as the most convenient to provide a posteriori error estimates for the time discretizations of such a kind of abstract differential equations. In the spirit of the classical a posteriori error estimates, under certain assumptions, the error is bounded in terms of computable quantities, in our case measured in the norm of Hölder continuous and weighted Hölder continuous functions. PB Elsevier SN 0898-1221 YR 2021 FD 2021-03-01 LK https://uvadoc.uva.es/handle/10324/64361 UL https://uvadoc.uva.es/handle/10324/64361 LA eng NO Computers & Mathematics with Applications, March 2021 vol. 85, p. 57-68. NO Producción Científica DS UVaDOC RD 01-jun-2024