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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.

A recursive scheme for determination of the sum-of-divisors function is presented. As all of the formulas involve triangular numbers, the scheme is therefore compared for efficiency with another known ...

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 ...

Recursion Pharmaceuticals currently has the industry's largest AI supercomputer. It also has partnerships with major drugmakers, but these have yet to yield major wins. Recursion'a lack of clinical ...