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A349580
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Decimal expansion of the 5-dimensional Steinmetz solid formed by the intersection of 5 unit-diameter 5-dimensional cylinders whose axes are mutually orthogonal and intersect at a single point.
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3
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1, 7, 1, 9, 8, 7, 2, 3, 7, 0, 1, 3, 2, 8, 8, 5, 7, 8, 0, 6, 5, 1, 0, 9, 3, 6, 2, 1, 3, 6, 8, 4, 4, 8, 3, 0, 4, 0, 3, 1, 8, 6, 4, 1, 1, 9, 3, 6, 3, 4, 1, 6, 3, 2, 6, 2, 9, 4, 5, 5, 3, 7, 2, 9, 0, 2, 4, 9, 9, 1, 0, 8, 1, 1, 2, 1, 7, 2, 4, 4, 6, 0, 4, 9, 2, 6, 4, 5, 1, 7, 6, 6, 6, 5, 2, 1, 6, 5, 5, 9
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OFFSET
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0,2
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COMMENTS
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The constant given by Hildebrand et al. (2012) and Kong et al. (2013) is for unit-radius cylinders, and is thus larger by a factor of 2^5. The constant here, for a unit-diameter cylinders, is analogous to the 3-dimensional case given by Moore (1974).
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LINKS
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FORMULA
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Equals 8 * (Pi/12 - arccot(2*sqrt(2))/sqrt(2)).
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EXAMPLE
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0.17198723701328857806510936213684483040318641193634...
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MATHEMATICA
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RealDigits[8 * (Pi/12 - ArcCot[2*Sqrt[2]]/Sqrt[2]), 10, 100][[1]]
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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