[PEIRCE-L] De In Esse Predication

Cf: De In Esse Predication https://inquiryintoinquiry.com/2021/05/23/de-in-esse-predication-preliminaries/ All, Questions have arisen in several places about classical logic and its vicissitudes, what used to be called “deviant logics” in some circles, all of which I recall being hot topics and

Aw: [PEIRCE-L] Intuitionistic Logic

Gary F., Jon, Jon, List   Now I think, that Peirce is right, and my temporality-hypothesis is not necessary: If the term "If A then (if A the B)" can be reduced to "if A then B", the latter can be expanded to the former as well. So "Every unicorn is pink" can be said as "for every unicorn

RE: [PEIRCE-L] Intuitionistic Logic

Helmut, my book has a lot to say about relations between time and logic, but probably the most relevant to your question is here: Objecting and Realizing (TS ·12) (gnusystems.ca) . Actually there’s more of Peirce than of me in it, but I hope

Aw: [PEIRCE-L] Intuitionistic Logic

Gary F., List   Yes, but I don´t know if I am right. It would mean, that temporality is something more than causality: Mere causality in the present would be symbolized with another implication: "If A then (if A then B)". But this term reduces to "if A Then B", when you write it with Boolean

Re: [PEIRCE-L] History, Its Arc, Its Tangents

BODY { font-family:Arial, Helvetica, sans-serif;font-size:12px; }Jon, list Jon - you wrote: "I think we are dealing with the scientific analogue of the moral figure above. To inquire is to act as if inquiry pursued far enough will end in truth. It's a

[PEIRCE-L] History, Its Arc, Its Tangents

Cf: History, Its Arc, Its Tangents • 1 https://inquiryintoinquiry.com/2019/12/18/history-its-arc-its-tangents-1/ Re: Renaissance Mathematicus (Thony Christie) https://thonyc.wordpress.com/about/ ::: Both Sides of History : Some Thoughts on a History of Science Cliché

RE: [PEIRCE-L] Intuitionistic Logic

Helmut, on this point you seem to disagree with Peirce about logical relations. Peirce in 1880 (W4:170) identified illation as the basic or ‘primitive’ logical relation, and in his 1906 ‘PAP’ (MS 293) he identified it with ‘the form of the relation of two instants of time, or what is the same