Matrices from circuit simulation problems.  Wim Bomhof, Univ. Utrecht.

Modelled as a system of differential algebraic equations.
Normally solved with a BDF method, and Newton's method, which
give rise to linear systems that need to be solved.  A, x, and b
are provided.

Wim Bomhof, Univ. Utrecht (now at PLAXIS (www.plaxis.nl), a small company
that develops a finite element code for geomechanical problems.
email:  (first name in lower case).(current directory name in lower case) at hetnet.nl.
circuit matrices posted at http://www.math.uu.nl/people/bomhof/.

Added to the UF sparse matrix collection in December 2001.


Citations:

Wim Bomhof and Henk van der Vorst, A parallel linear system solver
for circuit simulation problems. Numer. Linear Algebra Appl. 7 (2000), pp.
649-665. 

Wim Bomhof and Henk van der Vorst, A parallelizable GMRES-type method
for p-cyclic matrices, with applications in circuit simulation. To appear
in the proceedings of the SCEE-2000 Workshop, August 20-23, 2000, Warnemunde. 

Wim Bomhof, Iterative and parallel methods for linear systems, with
applications in circuit simulation. PhD thesis, Mathematical Institute, Utrecht
University, 2001.