Hierarchical Semiseparable Matrices

Low rank approximation

Why is low-rank nice?

A simple Hierarchical structure

A more complicated Hierarchical structure

Software

HssMatrices.jl Created by Bonis Bonev from EPFL

KernelMatrices.jl Note that this is the HODLR structure (Hierarchically Off-Diagonal Low-Rank)

HssMatrices.jl General \(\mathcal{H}\)-matrix library for Integral Equations.

IFGF.jl A Julia implementation of the Interpolated Factored Green Function Method.