Matrix ODEP400A

ODEP400A: Model Eigenvalue Problem of ODEs

generated by MVMODE, from the NEP Collection

[Download] [Visualizations] [Matrix Statistics] [Generator Information]

From generalized eigenvalue problem Ax=(lambda)Bx. This is matrix A; matrix B is ODEP400B from MVMODE set.

Download as

Compressed MatrixMarket format file: odep400a.mtx.gz (3623 bytes)

Compressed Harwell-Boeing format file: odep400a.rua.gz (2130 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 ] 133435 bytes

Size Type

400 x 400, 1201 entries real unsymmetric

Nonzeros

total diagonal below diagonal above diagonal A-A'
1201 400 402 399 8

Column Data Row Data

Average nonzeros per column : 3
Standard deviation : 0.087
index nonzeros
longest 2 4
shortest 400 2
Average nonzeros per row : 3
Standard deviation : 0.11
index nonzeros
longest 400 5
shortest 1 2

Bandwidths Profile Storage

lower 400 upper 2
average |i-j| 1.3 std.dev. 16

min max ave. std.dev.
lower bandwidth 0 399 2 20
upper bandwidth 0 1 1 0.05
Nonsymmetric skyline storage 796

Heaviest diagonals

offset from main 0 -1 1 -399 -398 -2
nonzeros 400 399 399 1 1 1
accumulated percent 33.31 66.53 99.75 99.83 99.92 100.00

Top 6 out of 6 nonvoid diagonals.

Conditioning

Frobenius norm 49 condition number (est.) 8.3e+05
2-norm (est.) 5 diagonal dominance no

Generator Information

Generator MVMODE
Source:	G.W. Stewart, University of Maryland
Discipline:	Ordinary differential equations

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Last change in this page: Wed Sep 22 13:37:31 US/Eastern 2004 [Comments: ]