This paper shows that the Hukuhara difference and generalized gH-difference, as well as the gH-division, are not inclusion-isotonic interval extensions of the difference and division of real numbers, respectively, and ...

This article presents the idea of "difference" as discussed by some authors linked "difference thinking". These different differences constitute a drama where each one will be displayed in its irreducibility and its ...

We obtain boundedness and asymptotic behavior of solutions for semilinear functional difference equations with infinite delay. Applications to Volterra difference equations with infinite delay are shown. (C) 2011 Elsevier ...

By using weighted summable dichotomies and Schauder's fixed point theorem, we prove the existence of convergent solutions of linear functional difference equations. We apply our result to Volterra difference equations with ...

We prove that the plane can be tiled with equilateral triangles and regular hexagons of integer sides using exactly one of each family.