3 papers
math.OC2026
Blaschke--Santal{ó} diagram for the volume, the diameter, and the Cheeger constant
Zakaria Fattah
We study the Blaschke--Santal{ó} diagram associated with the volume, the diameter, and the Cheeger constant. In the class of bounded open subsets of , , we gi…
math.OC2021
A reverse isoperimetric inequality for planar (, )--convex bodies
Gisella Croce, Zakaria Fattah, Giovanni Pisante
In this paper, we study a reverse isoperimetric inequality for planar convex bodies whose radius of curvature is between two positive numbers 0 < < , called (, )--conv…
math.SP2018
Eigenvalues of Dirichlet Laplacian within the class of open sets with constant diameter
Zakaria Fattah, Mohamed Berrada
This paper is about a shape optimization problem related to the Dirichlet Laplacian eingevalues in the Euclidean plane. More precisely we study the shape of the minimizer in the cl…