has characteristic uses KINSOL 2011-05-09 http://identifiers.org/doi/10.1137/0911026 http://identifiers.org/doi/10.1145/1089014.1089020 http://identifiers.org/doi/10.4249/scholarpedia.2860 AZ FKINSOL KINSOL solves algebraic systems in real N-space, written as F(u)=0, F:RN->RN, given an initial guess u0. The basic method is either a modified or an inexact Newton iteration [http://identifiers.org/biomodels.kisao/KISAO_0000408]. The linear systems that arise are solved with either a direct (dense or banded) solver (serial version only), or one of the Krylov iterative solvers [http://identifiers.org/biomodels.kisao/KISAO_0000354]. In the Krylov case, the user can (optionally) supply a right preconditioner. NKSOL Newton-Krylov solver for nonlinear algebraic systems SUNDIALS Krylov subspace projection method linearity of equation Newton-type method