Work on the concurrent Gauss-Jordan algorithm was mostly done by Paul Hipes. Eric Van de Velde developed the linear algebra library discussed in Section 8.1.7, and collaborated with Jens Lorenz in their work on invariant manifolds. Many of the other current algorithms were devised by Geoffrey Fox. Wojtek Furmanski and David Walker worked on routines for transforming decompositions. The implementation of the banded LU solver on the Caltech/JPL Mark II hypercube was done by Tom Aldcroft, Arturo Cisneros, and David Walker.