working on interface for nonlinear TAO solver
Merged fenics-project/dolfin into master
working on interfaces for TAO's nonlinear solver
Merged fenics-project/dolfin into master
merge
add KSPNASH method
it's working! but the solution vector is reversed
add nash and stcg CG methods
add friend class
change docstrings
add interface to be able to choose KSP/PC objects
as a subclass of NonlinearProblem and use old notations for gradient and Hessian
this version works finally, we should introduce a new solution vector instead of using that passed in arguments
using new PETSc's TAO solver interface
unit test for PETSc's TAO solver
it's buckling...
modify docstrings
Merged fenics-project/dolfin into master
same structure as demo_contact-vi-snes.py
minor