BCSSTK24: BCS Structural Engineering Matrices (eigenvalue problems)
Calgary Olympic Saddledome arena

from set BCSSTRUC3, from the Harwell-Boeing Collection

From generalized eigenvalue problem Kx=(lambda)Mx. This is matrix K; matrix M is BCSSTM24 from BCSSTRUC3 set.

Download as

Compressed MatrixMarket format file: bcsstk24.mtx.gz (858278 bytes)
Compressed Harwell-Boeing format file: bcsstk24.rsa.gz (658217 bytes)

Visualizations

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

Structure Plot	City Plot

Matrix Statistics

Size	Type
3562 x 3562, 81736 entries	real symmetric indefinite
Nonzeros
total diagonal below diagonal above diagonal A-A' 159910 3562 78174 78174 0
Column Data	Row Data
Average nonzeros per column : 45 Standard deviation : 11 index nonzeros longest 1235 57 shortest 214 15	Average nonzeros per row : 45 Standard deviation : 11 index nonzeros longest 1235 57 shortest 214 15
Bandwidths	Profile Storage
lower 3334 upper 3334 average |i-j| 4.1e+02 std.dev. 8.3e+02	min max ave. std.dev. lower bandwidth 1 3334 5.7e+02 9.8e+02 upper bandwidth 1 3334 5.7e+02 9.8e+02 Symmetric skyline storage requirement:2031722
Heaviest diagonals
offset from main 0 -1 1 -2 2 -3 3 -4 4 -5 nonzeros 3562 3458 3458 3350 3350 3226 3226 3124 3124 3042 accumulated percent 2.23 4.39 6.55 8.65 10.74 12.76 14.78 16.73 18.68 20.59 Top 10 out of 4309 nonvoid diagonals.
Conditioning
Frobenius norm 1.4e+14 condition number (est.) 65 2-norm (est.) 3.1e+13 diagonal dominance no

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Last change in this page: Wed Sep 22 13:33:26 US/Eastern 2004 [Comments: ]