ℋ-matrix approximability of the inverses of FEM matrices.
Markus FaustmannJens Markus MelenkDirk PraetoriusPublished in: Numerische Mathematik (2015)
Keyphrases
- singular value decomposition
- coefficient matrix
- singular values
- matrix representation
- square matrices
- perturbation theory
- positive definite
- projection matrices
- eigenvalues and eigenvectors
- linear complementarity problem
- rows and columns
- finite element
- linear algebra
- sufficient conditions
- projection matrix
- matrix multiplication
- data matrix
- positive semidefinite
- block diagonal
- low rank and sparse
- symmetric positive definite
- low rank
- systems of linear equations
- sparse matrix
- distance matrix
- symmetric matrices
- binary matrix
- measurement matrix
- low rank approximation
- totally unimodular
- approximation algorithms
- low rank matrix
- pseudo inverse
- covariance matrix
- low rank matrix approximation
- finite element model
- linear systems
- correlation matrix
- finite element method
- sparse matrices
- affinity matrix
- factor matrices
- matrix factorization
- original data
- moore penrose
- linear combination
- least squares
- null space
- random projections
- mixed integer
- eigendecomposition
- semidefinite programming