Sommaire du Fascicule no. 1

Existence, uniqueness, approximation of solutions and $\mathbb E_{\alpha}$--Ulam stability results for a class of nonlinear fractional differential equations involving $\psi$--Caputo derivative with initial conditions
Fixed point theorems of generalized multi-valued mappings in cone b-metric spaces
Fixed point theorems on a closed ball
A note on identities with derivations in prime rings
Measures of noncompactness on $w$-distance spaces
Coefficient estimates for families of bi-univalent functions defined by Ruscheweyh derivative operator
Qualitative study of a third order rational system of difference equations
Some best proximity point results for multivalued mappings on partial metric spaces
Fixed point for $F_\perp$-weak contraction
New properties of the time-scale fractional operators with application to dynamic equations

Sommaire du Fascicule no. 2

Application of quasi-$f$-power increasing sequence in absolute $\phi-|C,\alpha, \beta;\delta;l|$ of infinite series
On p-topological groups
Lower bounds for blow up time of the $p$-Laplacian equation with damping term
Fixed point result for rational type $\varphi-$Geraghty contraction
Z-contraction condition involving simulation function in b-metric space under fixed points considerations
Rao-Nakra model with internal damping and time delay
Serial relation and textural rough set
Inequalities for a generalized finite Hilbert transform of convex functions
Applications of Borel distribution series on holomorphic and bi-univalent functions
Fixed point results via altering distance functions in relational fuzzy metric spaces with application
Blow up results for a viscoelastic Kirchhoff-type equation with logarithmic nonlinearity and strong damping