Re: diagonalizing large sparse matrices

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Posted by Terry J. Hilsabeck on August 02, 1998 at 01:37:14:

In Reply to: diagonalizing large sparse matrices posted by Nigel Badnell on November 28, 1997 at 11:11:39:

Try dgeev for real matrices and zgeev for complex.

: I have large block tri-diagonal matrices that I want
: all the e-values and e-vectors from, real symmetric
: initially, but complex symmetric in general. Lanczos
: methods are generally the way to go for large sparse
: matrices but block tridiagonal should make things
: easier.....does anyone have any suggestions, pointers
: to codes? (The blocks themselve are non-sparse but
: are readily diagonalizable.)

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