HILFER AND HADAMARD FRACTIONAL DIFFERENTIAL EQUATIONS IN FRÉCHET SPACES.

In this paper, by using the fixed point theory and the technique relying on the concept of measure of noncompactness in Fréchet spaces, we prove some existence and Ulam-Hyers-Rassias stability results for some Hilfer and Hilfer-Hadamard fractional differential equations. [ABSTRACT FROM AUTHOR]