Walter Pitts and “A Logical Calculus”
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- Schlatter, M. & Aizawa, K. Synthese (2008) 162: 235. doi:10.1007/s11229-007-9182-9
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In 1941 I presented my notions on the flow of information through ranks of neurons to Rashevsky’s seminar in the Committee on Mathematical Biology of the University of Chicago and met Walter Pitts, who then was about seventeen years old. He was working on a mathematical theory of learning and I was much impressed. He was interested in problems of circularity, how to handle regenerative nervous activity in closed loops....For two years Walter and I worked on these problems whose solution depended upon modular mathematics of which I knew nothing, but Walter did. (McCulloch 1989, pp. 35–36, cf. McCulloch, 1965a, pp. 9–10).
In this paper, we will fill in some of the details regarding Pitts’s interest in problems of circularity, regenerative activity in closed loops of neurons, and modular mathematics, and the way in which they relate to “A Logical Calculus.”