Abstract
The Steiner subratio is a fundamental characteristic of a metric space, introduced by A. Ivanov and A. Tuzhilin. This work tries to estimate this subratio for five-point sets on a plane and four-point sets in three-dimensional space.
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References
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Translated from Fundamentalnaya i Prikladnaya Matematika, Vol. 18, No. 2, pp. 167–179, 2013.
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Ovsyannikov, Z. The Steiner Subratio of Five Points on a Plane and Four Points in Three-Dimensional Space. J Math Sci 203, 864–872 (2014). https://doi.org/10.1007/s10958-014-2178-3
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DOI: https://doi.org/10.1007/s10958-014-2178-3