Timeline for When are some products of gamma functions algebraic numbers?
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3 events
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| Jul 22, 2022 at 0:41 | comment | added | Oscar Lanzi | The equality given here is easy to render in terms of geometry. If a regular heptagon ABCDEFG is inscribed in a circle of unit diameter and we apply Ptolemy's Theorem to quadrilateral ABCF within this figure, we find that $\csc(\pi/7)=\csc(2\pi/7)+\csc(3\pi/7)$. This matches the gamma-function relation through the Reflection Formula. | |
| Nov 19, 2021 at 3:03 | history | edited | David Roberts♦ | CC BY-SA 4.0 |
fixed arxiv front link, gave full reference and doi link
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| Dec 3, 2009 at 1:53 | history | answered | Kevin O'Bryant | CC BY-SA 2.5 |