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Recursion Pharmaceuticals, a drug discovery company that applies artificial intelligence to biology, is shoring up its technology platform by buying two startups that bolster its chemistry ...

In this article, we study some new characterizations of primitive recursive functions based on restricted forms of primitive recursion, improving the pioneering work of R. M. Robinson and M. D.

The Journal of Symbolic Logic (JSL) was founded in 1936 and it has become the leading research journal in the field. It is issued quarterly. Volume 71, being published during 2006, will consist of ...