@DavisSmith @philosophy

For that my (classical) favorites are #PeircesLaw and #Leibniz's #PraeclarumTheorema.

Here's how they look in a variant of #Peirce's #AlphaGraphs.

• https://inquiryintoinquiry.com/2008/10/06/peirces-law/

• https://inquiryintoinquiry.com/2008/10/05/praeclarum-theorema/