Matrix MHD416A

MHD416A: 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 A; matrix B is MHD416B from MHD set.

Download as

Compressed MatrixMarket format file: mhd416a.mtx.gz (61913 bytes)

Compressed Harwell-Boeing format file: mhd416a.rua.gz (47642 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

	3D Interactive City Plot
	[ VRML Version 2, gzipped ] 229863 bytes

Size Type

416 x 416, 8562 entries real unsymmetric

Nonzeros

total diagonal below diagonal above diagonal A-A'
8562 161 3918 4483 8106

Column Data Row Data

Average nonzeros per column : 21
Standard deviation : 12
index nonzeros
longest 45 38
shortest 1 1
Average nonzeros per row : 21
Standard deviation : 6.3
index nonzeros
longest 42 33
shortest 1 1

Bandwidths Profile Storage

lower 30 upper 30
average |i-j| 11 std.dev. 7.3

min max ave. std.dev.
lower bandwidth 0 29 21 5.5
upper bandwidth 0 29 21 5.6
Nonsymmetric skyline storage 17032

Heaviest diagonals

offset from main 6 5 2 4 -6 3 -10 -5 7 -2
nonzeros 304 276 255 254 252 250 225 225 225 204
accumulated percent 3.55 6.77 9.75 12.72 15.66 18.58 21.21 23.84 26.47 28.85

Top 10 out of 58 nonvoid diagonals.

Conditioning

Frobenius norm 2.9e+03 condition number (est.) 2.4e+25
2-norm (est.) 2.5e+03 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: ]