Kristian Seip

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We prove that a suitably adjusted version of Peter Jones’ formula for interpolation in H∞ gives a sharp upper bound for what is known as the constant of interpolation. We show how this leads to precise and computable numerical bounds for this constant. With each finite or infinite sequence Z = (zj) (j = 1, 2, ...) of distinct points zj = xj + iyj in the(More)