Lambert M. Surhone (u. a.) | Van der Waerden Number | Taschenbuch | Englisch
26,95 €
The smallest such N is the van der Waerden number W(r,k). Van der Waerden numbers are primitive recursive, as proved by Shelah; in fact he proved that they are (at most) on the fifth level mathcal{E}^5 of the Grzegorczyk hierarchy.
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