Several important multivariate probability inequalities can be formulated in terms of multivariate convolutions of the form ∫ $f_{1}(x)f_{2}(x-\theta )dx$, where ...

In [14], Reich posed the following question: Let (X, d) be a complete metric space, and let T : X → CB(X) satisfy H(Tx, Ty) ≤ k[d(x, y)]d(x, y) for all x, y ∊ X with x ≠ y, where k is a function of (0 ...

Yosra Barkaoui’s doctoral dissertation in mathematics at the University of Vaasa, Finland, has successfully generalised a fundamental theorem that has been limited to the bounded case. The research ...