BCSSTM13: BCS Structural Engineering Matrices (eigenvalue matrices)
Fluid flow generalized eigenvalues

from set BCSSTRUC1, from the Harwell-Boeing Collection

From generalized eigenvalue problem Kx=(lambda)Mx. This is matrix M; matrix K is BCSSTK13 from BCSSTRUC1 set.

Download as

Compressed MatrixMarket format file: bcsstm13.mtx.gz (69976 bytes)
Compressed Harwell-Boeing format file: bcsstm13.rsa.gz (48071 bytes)

Visualizations

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Structure Plot	City Plot
	3D Interactive City Plot
	[ VRML Version 2, gzipped ] 602371 bytes

Matrix Statistics

Size	Type
2003 x 2003, 11973 entries	real symmetric positive semi-definite
Nonzeros
total diagonal below diagonal above diagonal A-A' 21181 1241 9970 9970 0
Column Data	Row Data
Average nonzeros per column : 11 Standard deviation : 16 index nonzeros longest 937 70 shortest 4 0	Average nonzeros per row : 11 Standard deviation : 16 index nonzeros longest 937 70 shortest 4 0
Bandwidths	Profile Storage
lower 523 upper 523 average |i-j| 97 std.dev. 1e+02	min max ave. std.dev. lower bandwidth 1 2004 3.9e+02 5.3e+02 upper bandwidth 1 2004 3.9e+02 5.3e+02 Symmetric skyline storage requirement:776963
Heaviest diagonals
offset from main 0 -3 3 -2 2 -11 11 -10 10 -8 nonzeros 1241 241 241 162 162 157 157 150 150 144 accumulated percent 5.86 7.00 8.13 8.90 9.66 10.41 11.15 11.85 12.56 13.24 Top 10 out of 917 nonvoid diagonals.
Conditioning
Frobenius norm 8.9e+02 condition number (est.) Inf 2-norm (est.) 1.8e+02 diagonal dominance no

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Last change in this page: Wed Sep 22 13:33:24 US/Eastern 2004 [Comments: ]