Matrix MHD1280B

MHD1280B: Alfven Spectra in Magnetohydrodynamics

from set MHD, from the NEP Collection

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From generalized eigenvalue problem Ax=(lambda)Bx. This is matrix B; matrix A is MHD1280A from MHD set.

Download as

Compressed MatrixMarket format file: mhd1280b.mtx.gz (97802 bytes)

Compressed Harwell-Boeing format file: mhd1280b.cua.gz (121204 bytes)

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Visualizations

Click on image to get an enlarged version. Click on label to get an explanation.

Structure Plot	City Plot

Size Type

1280 x 1280, 22778 entries complex Hermitian

Nonzeros

total diagonal below diagonal above diagonal A-A' A-A*
22778 1280 10749 10749 15578 0

Column Data Row Data

Average nonzeros per column : 18
Standard deviation : 9.9
index nonzeros
longest 69 32
shortest 1 1
Average nonzeros per row : 18
Standard deviation : 9.9
index nonzeros
longest 69 32
shortest 1 1

Bandwidths Profile Storage

lower 44 upper 44
average |i-j| 20 std.dev. 15

min max ave. std.dev.
lower bandwidth 0 43 34 6.2
upper bandwidth 0 43 34 6.2
Symmetric skyline storage requirement:85840

Heaviest diagonals

offset from main 0 -1 1 -32 32 -2 2 -31 31 -3
nonzeros 1280 1016 1016 854 854 790 790 738 738 624
accumulated percent 5.62 10.08 14.54 18.29 22.04 25.51 28.98 32.22 35.46 38.19

Top 10 out of 69 nonvoid diagonals.

Conditioning

Frobenius norm 1.1e+02 condition number (est.) Not available.
2-norm (est.) 70 diagonal dominance no

Set Information

Set MHD
Source:	A. Booten, M.N. Kooper, H.A. van der Vorst, S. Poedts and J.P. Goedbloed University of Utrecht, the Netherlands
Discipline:	Plasma physics

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Last change in this page: Wed Sep 22 13:37:26 US/Eastern 2004 [Comments: ]