Deletion of Alladi–Grinstead constant

Comment: This appears to be a legitimately studied concept in mathematics, but a very obscure one.  The original Alladi–Grinstead paper from 1977 has been cited 7 times in Google scholar, but none of those citations appear to constitute non-trivial in-depth coverage of this concept. The MathWorld coverage is in-depth-enough to count towards , but it's only one source, and I don't think we should automatically cover things just because MathWorld does. I found the phrase "Alladi–Grinstead constant" outside MathWorld only in one other paper, a recent unpublished preprint https://arxiv.org/abs/1401.2694, which uses the constant in a formula rather than studying it in-depth. The phrase "Alladi-Grinstead" appears nowhere in MathSciNet. So I don't think this meets the standard of having multiple in-depth studies by multiple independent groups of researchers
Stance: delete
Cited policy: Wikipedia:Notability (WP:GNG)