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+--- Thread: [MO] Example using operation between + and * (/showthread.php?tid=545)
[MO] Example using operation between + and * - Gottfried - 12/08/2010
<Not directly connected with tetration but with fractional-indexed binary operations...>
In the math-overflow I came across that nice question, which connects the "half-indexed" operation "between add and multiply" with Sophie-Germain-primes.
http://mathoverflow.net/questions/48638/why-are-this-operators-primes-the-sophie-germain-primes
A tiny, but nice and surprising piece...
Gottfried