Group Ronis

Group Description
Crystalline compounds (zeolites,sodalites), D. Ronis, Univ. of McGill.

Two matrices from David Ronis, Chemistry Dept, Univ of McGill, Canada.
Email:  ronis :at the domain:

Added to the UF sparse matrix collection on March 19, 2001.

His comments:

    The matrix is generated on the fly in a large code that analyses the
    elastic properties (and many other things) in a class of complicated
    crystalline compounds called zeolites or sodalites.

    Note that in the actual inversions, I add a positive number times the
    unit matrix to this matrix.  The typical value of this scalar is
    anywhere from 1e24 to 1e28--it really doesn't matter from the point of
    view of the calculation I want to do--the matrix is nonsingular in all

(in the two matrices, xenon1.rua and xenon2.rua, 1e24 has already been
added to the diagonal).
Displaying all 2 collection matrices
Id Name Group Rows Cols Nonzeros Kind Date Download File
801 xenon1 Ronis 48,600 48,600 1,181,120 Materials Problem 2001 MATLAB Rutherford Boeing Matrix Market
802 xenon2 Ronis 157,464 157,464 3,866,688 Materials Problem 2001 MATLAB Rutherford Boeing Matrix Market