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Van der Houwen's conjecture on contact points of optimal stability regions
Van der Houwen's conjecture. The optimal stability region touches the circle $C_{m,n}$ at exactly $m-p+2$ distinct points.
Conjectureopennumerical-analysis runge-kutta-methods stability-polynomialsarXiv posted 2 days ago

Van der Houwen's conjecture on contact points of optimal stability regions