# Tag Archives: Propositional Calculus

## Differential Logic • Discussion 10

Re: Laws of Form • Lyle Anderson Let’s say we’re observing a system at discrete intervals of time and testing whether its state satisfies or falsifies a given predicate or proposition at each moment.  Then and are two state variables … Continue reading

## Differential Logic • Discussion 9

Re: Laws of Form • Lyle Anderson LA: All I am asking is what is your definition of in relation to ‌.  So far I have is what one has to do to get from to or from to ‌.  … Continue reading

## Differential Logic • Discussion 8

Re: Laws of Form • Lyle Anderson A Reader inquired about the relationship between ordinary and differential boolean variables.  I thought it might help to explain how I first came to think about differential logic as a means of describing … Continue reading

## Animated Logical Graphs • 80

Re: Category Theory • Chad Nester CN: Re: Categorical Treatments of Existential Graphs Cf: N. Haydon and P. Sobociński • Compositional Diagrammatic First-Order Logic Thanks, Chad, for that extremely nice treatment of Peirce’s existential graphs at the β level, tantamount to … Continue reading

## Differential Logic • Comment 6

Cf: Category Theory • Jon Awbrey I opened a topic in the “logic” stream of “category theory.zulipchat” to discuss differential logic in a category theoretic environment and began by linking a few basic resources. The topic on logical graphs introduced … Continue reading

## Animated Logical Graphs • 79

Re: Category Theory • Henry Story HS: I think in this 2020 Applied Category Theory talk by Rocco Gangle, A Generic Figures Reconstruction of Peirce’s Existential Graphs (Alpha), he is looking at showing how Peirce’s work can be expressed in … Continue reading

## Animated Logical Graphs • 78

Cf: Category Theory • Jon Awbrey As far as the “animated” part goes, I lost my klutz-friendly animation app in my last platform change and then got immersed in other things, so it may be a while before I get back to … Continue reading

## Animated Logical Graphs • 77

Cf: Category Theory • Jon Awbrey A place for exploring animated forms of visual inference inspired by the work of C.S. Peirce and Spencer Brown. I opened a topic in the “logic” stream of “category theory.zulipchat” to discuss logical graphs in a … Continue reading

## Differential Logic • Discussion 7

Re: Differential Logic • 1 Re: FB | Pattern Languages for Systemic Transformation • Steve Kramer SK: Can differential logic be described using category theory?  To what other logical or mathematical modalities does differential logic relate?  Give an example.  Partial … Continue reading

## Differential Logic • Discussion 6

Re: Differential Logic • 5 Re: Laws of Form • Lyle Anderson JA: The differential proposition may be read as saying “change or change or both”.  And this can be recognized as just what you need to do if you … Continue reading