3 papers
math.NA2025
Adaptive Cross Approximation with a Geometrical Pivot Choice: ACA-GP Method
Vladislav A. Yastrebov, Camille Noûs
The Adaptive Cross Approximation (ACA) method is widely used to approximate admissible blocks of hierarchical matrices, or H-matrices, from discretized operators in the boundary in…
astro-ph.IM2024
SF2A Environmental Transition Commission: Towards a desirable future for research in astronomy
Faustine Cantalloube, Camille Noûs
During its annual conference in 2024, the French Society of Astronomy & Astrophysics (SF2A) hosted a special session dedicated to discussing the environmental transition within the…
math-ph2024
Limited regularity of a specific electronic reduced density matrix for molecules
Thierry Jecko, Camille Noûs
We consider an electronic bound state of the usual, non-relativistic, molecular Hamiltonian with Coulomb interactions, fixed nuclei, and N electrons (N>1). Near appropriate electro…