We study the existence and uniqueness of solution of a nonlinear Cauchy problem involving
the ψ ψ-Hilfer fractional derivative. In addition, we discuss the Ulam–Hyers and Ulam–Hyers …

In this paper, we discuss the existence and non-existence of weak solutions to the non-
linear problem with a fractional p-Laplacian introduced by the ψ-Hilfer fractional operator, by …

In this present paper, we investigate a new class of singular double phase p-Laplacian
equation problems with a ψ-Hilfer fractional operator combined from a parametric term …

In this paper, we introduce the ψ ψ-Hilfer pseudo-fractional operator, motivated by the ψ ψ-
Hilfer fractional derivative and the theory of pseudo-analysis. We investigate a wide class of …

In this paper, we present the ψ ψ-Hilfer fractional derivatives of variable order (FDVO) of 3
types I, II and III, versions A and B, as well as their combinations. In addition, we propose …

We consider a fractional thermostat model involving ψ ψ-Caputo fractional derivatives. Two
cases are discussed: the case when the source term is concave and the case when the …

In this manuscript, it is introduced a new mean curvature operator which involves a φ-Hilfer
fractional operator (φ-HFO) and variable exponents and appropriated fractional spaces to …

Fractional Order Pseudoparabolic Partial Differential Equation: Ulam–Hyers Stability | Bulletin
of the Brazilian Mathematical Society, New Series Skip to main content Springer Nature Link …

In the present paper, we investigate the Hardy–Littlewood type and the integration by parts
result for ψ ψ–Riemann–Liouville fractional integrals. Also, we attack the integration by parts …

In this paper, by means of Banach fixed point theorem, we investigate the existence and
Ulam–Hyers–Rassias stability of the noninstantaneous impulsive integrodifferential …