On global convergence of iterative methods.- Multi-grid solution of continuation problems.- A fast solver for nonlinear eigenvalue problems.- A device for the acceleration of convergence of a monotonously enclosing iteration method.- Overrelaxation in monotonically convergent iteration methods.- Simple bounds for zeros of systems of equations.- Das Auflösungsverhalten von nichtlinearen Fixmengen-Systemen.- On the convergence of a class of newton-like methods.- ADI-methods for nonlinear variational inequalities of evolution.- Relaxation methods for the computation of the spectral norm.- Numerical computation of periodic solutions of a nonlinear wave equation.- Erfahrungen bei der Anwendung numerischer Verfahren zur Lösung nichtlinearer hyperbolischer Differentialgleichungssysteme.- On the simultaneous determination of polynomial roots.