Exact(13)
Now let us begin with the convex valued case.
Also Žikić generalized multi valued case of Hick's contraction [8].
The first one concerns the convex valued case, and the others are related to the nonconvex valued case.
We extended (φ - k) - B contraction which introduced by Mihet [9] to multi valued case [10].
Now, we obtain two fixed-point theorems of -contraction for single valued case.
On the other hand, Hadzic et al. extended the concept of contraction to the multi valued case [5].
Similar(47)
(a) Convex set-valued case.
Later, many researchers extended (EP) to the vector set-valued case in different ways; see [5 7] and the references therein.
This vector-valued (Banach space-valued) case is particularly important for applications to (the asymptotic behavior of solutions to) differential equations and dynamical systems.
(b) Nonconvex set-valued case.
All these inequalities hold equally in the vector-valued case, that is, for functions with values in ℓρ for 1<ρ<∞.
Write better and faster with AI suggestions while staying true to your unique style.
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com