Relaxed forms of BBK algorithm and FBP algorithm for symmetric indefinite linear systems
In this paper, we Study the direct solvers for the linear system Ax = b, where A is symmetric and indefinite. We discuss the so-called BBK algorithm and FBP algorithm and propose relaxed forms of them which provide options for fast pivot selection. We also present some numerical tests to show the efficiency of our algorithms. (c) 2007 Elsevier Ltd. All rights reserved.
bbk fbp direct solvers symmetric indefinite matrices symmetric pivoting