Camille Pouchol

collaborators

2 papers

math.CA2026

Improved polynomial estimate for the Lebesgue constants of Leja sequences on finite unions of intervals

Camille Pouchol

We prove a new polynomial upper bound for the Lebesgue constants of $τ$ -Leja sequences on finite unions of real intervals. Building on an estimate of Andrievskii and Nazarov, we re…

math.OC2026

Generalisation of Farkas' lemma beyond closedness: a constructive approach via Fenchel-Rockafellar duality

Camille Pouchol, Emmanuel Trélat, Christophe Zhang

Farkas' lemma is an ubiquitous tool in optimisation, as it provides necessary and sufficient conditions to have $b \in A (P)$ , where $P$ is a closed convex cone, $A$ is a (continuou…