User profiles for Antoine Deza

Antoine Deza

Professor, McMaster University
Verified email at mcmaster.ca
Cited by 1849

The ridge graph of the metric polytope and some relatives

A Deza, M Deza - Polytopes: Abstract, Convex and Computational, 1994 - Springer
The metric polytope is a (;)-dimensional convex polytope defined by its 4 (~) facets. The vertices
of the metric polytope are known only up to n= 6, for n= 7 they number more than 60000. …

[HTML][HTML] How many double squares can a string contain?

A Deza, F Franek, A Thierry - Discrete Applied Mathematics, 2015 - Elsevier
Counting the types of squares rather than their occurrences, we consider the problem of
bounding the number of distinct squares in a string. Fraenkel and Simpson showed in 1998 that …

Improved bounds on the diameter of lattice polytopes

A Deza, L Pournin - Acta Mathematica Hungarica, 2018 - Springer
We show that the largest possible diameter $${\delta(d,k)}$$ δ ( d , k ) of a d-dimensional
polytope whose vertices have integer coordinates ranging between 0 and k is at most $${kd - \…

A linear optimization oracle for zonotope computation

A Deza, L Pournin - Computational Geometry, 2022 - Elsevier
A class of counting problems asks for the number of regions of a central hyperplane arrangement.
By duality, this is the same as counting the vertices of a zonotope. Efficient algorithms …

Optimization over degree sequences

A Deza, A Levin, SM Meesum, S Onn - SIAM Journal on Discrete Mathematics, 2018 - SIAM
We introduce and study the problem of optimizing arbitrary functions over degree sequences
of hypergraphs and multihypergraphs. We show that over multihypergraphs the problem …

Electric Vehicle Charging Network Design under Congestion

A Deza, K Huang, CA Suárez - arXiv preprint arXiv:2412.19689, 2024 - arxiv.org
This paper presents an extension of a recently introduced multistage stochastic integer
model designed for optimizing the deployment of charging stations under uncertainty. A key …

The vertices of primitive zonotopes

A Deza, L Pournin, R Rakotonarivo - Contemporary Mathematics, 2021 - books.google.com
Primitive zonotopes arise naturally in various research areas, such as discrete geometry,
combinatorial optimization, and theoretical physics. We provide geometric and combinatorial …

The diameter of lattice zonotopes

A Deza, L Pournin, N Sukegawa - Proceedings of the American …, 2020 - ams.org
We establish sharp asymptotic estimates for the diameter of primitive zonotopes when their
dimension is fixed and the number of their generators grows large. We also prove that, for …

Primitive point packing

A Deza, L Pournin - Mathematika, 2022 - Wiley Online Library
A point in the d‐dimensional integer lattice Z d $\mathbb {Z}^d$ is primitive when its coordinates
are relatively prime. Two primitive points are multiples of one another when they are …

On the skeleton of the metric polytope

A Deza, K Fukuda, D Pasechnik, M Sato - Discrete and Computational …, 2001 - Springer
We consider convex polyhedra with applications to well-known combinatorial optimization
problems: the metric polytope m n and its relatives. For n ≤ 6 the description of the metric …