## The Difference That Makes A Difference That Peirce Makes : 18

From a functional point of view it was a step backward when we passed from Peirce’s $\sum$ and $\prod$ to the current convention of $\exists$ and $\forall$ for logical quantifiers.  There’s a rough indication of what I mean at the following location:

Just a reminder to get back to this later …

This site uses Akismet to reduce spam. Learn how your comment data is processed.