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Computable or not computable? I would conjecture that it is not computable. It is the number of way to ‘configure’ circles (in the affine plane) It gives pretty pictures. Explanation by Neil Sloane: https://youtu.be/bRIL9kMJJSc <https://youtu.be/bRIL9kMJJSc> Note that the predicate “computable”, (on the incites I of the phi_i) is itself an exemple of well defined but (highly) non computable number property, as I have shown many times. It is pi_2 complete. Riemann hypothesis is pi_1. Bruno -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/38A1CC03-0E16-41C1-A41B-8D4586DBA22B%40ulb.ac.be.
