ℋ-matrix approximability of inverses of FEM matrices for the time-harmonic Maxwell equations.
Markus FaustmannJens Markus MelenkMaryam ParviziPublished in: Adv. Comput. Math. (2022)
Keyphrases
- coefficient matrix
- singular value decomposition
- linear systems
- singular values
- positive definite
- sufficient conditions
- eigenvalues and eigenvectors
- square matrices
- matrix representation
- projection matrices
- perturbation theory
- linear complementarity problem
- positive semidefinite
- projection matrix
- sparse matrix
- data matrix
- finite element
- block diagonal
- systems of linear equations
- rows and columns
- low rank and sparse
- linear algebra
- correlation matrix
- symmetric positive definite
- square root
- symmetric matrices
- covariance matrix
- linear equations
- matrix completion
- totally unimodular
- low rank
- binary matrices
- measurement matrix
- kernel function
- covariance matrices
- jacobian matrix
- low rank matrix
- pseudo inverse
- finite element model
- distance matrix
- numerical solution
- binary matrix
- low rank approximation
- finite difference
- set of linear equations
- mathematical model
- finite element method
- polynomial equations
- nonnegative matrix factorization
- semidefinite programming
- semidefinite
- symmetric matrix