Abstract
This work analyzes the integration of initial value problems for stiff systems of ordinary differential equations by Runge-Kutta methods. The author uses the characterization of stiff initial value problems due to Kreiss: the Jacobian matrix is essentially negative dominant and satisfies a relative Lipschitz condition. The existence and regularity of the numerical solution are established, and conditions under which the Runge-Kutta formula is stable are given.

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