GHS_indef/helm2d03

Helmholtz eq. on a unit square: -div grad u -10000 u = 1, B.C. u = 0
Name helm2d03
Group GHS_indef
Matrix ID 1236
Num Rows 392,257
Num Cols 392,257
Nonzeros 2,741,935
Pattern Entries 2,741,935
Kind 2D/3D Problem
Symmetric Yes
Date 2004
Author
Editor N. Gould, Y. Hu, J. Scott
Structural Rank 392,257
Structural Rank Full true
Num Dmperm Blocks 1
Strongly Connect Components 1
Num Explicit Zeros 0
Pattern Symmetry 100%
Numeric Symmetry 100%
Cholesky Candidate yes
Positive Definite no
Type real