Matrix MHD416B

MHD416B: 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 MHD416A from MHD set.

Download as

Compressed MatrixMarket format file: mhd416b.mtx.gz (9698 bytes)

Compressed Harwell-Boeing format file: mhd416b.rua.gz (10371 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 ] 337169 bytes

Size Type

416 x 416, 2312 entries real unsymmetric

Nonzeros

total diagonal below diagonal above diagonal A-A'
2312 416 948 948 0

Column Data Row Data

Average nonzeros per column : 5.6
Standard deviation : 2
index nonzeros
longest 22 10
shortest 1 1
Average nonzeros per row : 5.6
Standard deviation : 2
index nonzeros
longest 22 10
shortest 1 1

Bandwidths Profile Storage

lower 19 upper 19
average |i-j| 9.1 std.dev. 7.5

min max ave. std.dev.
lower bandwidth 0 18 16 3.2
upper bandwidth 0 18 16 3.2
Symmetric skyline storage requirement:6449

Heaviest diagonals

offset from main 0 -16 16 -1 1 -15 15 -17 17 -2
nonzeros 416 273 273 226 226 200 200 98 98 51
accumulated percent 17.99 29.80 41.61 51.38 61.16 69.81 78.46 82.70 86.94 89.14

Top 10 out of 19 nonvoid diagonals.

Conditioning

Frobenius norm 5.2 condition number (est.) 5.1e+09
2-norm (est.) 2.2 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: ]