[PEIRCE-L] Sign Relations, Triadic Relations, Relation Theory

2021-01-17 Thread John F. Sowa
Azamat,  People observe the intension/extension distinction  without learning the name for the distinction. AA>It implies that operational meanings or definitions could be more significant than an intension/extension or representation/reference or connotation/denotation dichotomy.  Languages

Re: Aw: Re: [PEIRCE-L] Sign Relations, Triadic Relations, Relation Theory

2021-01-17 Thread John F. Sowa
Helmut, In every version of language and logic -- ancient or modern, informal or formal -- the intensional definition is fundamental.  It corresponds to the definition you'll find in a typical dictionary of any natural  language or in any formal specification in science, engineering, business, o

[PEIRCE-L] Re: Sign Relations, Triadic Relations, Relation Theory

2021-01-17 Thread Jon Awbrey
Azamat, Helmut, John, All ... We (some of us) have doggedly chased our assorted masters down this road so many times before I could hardly e-numerate them all especially since the lion's share of their spoors long ago disapparated from the live web. But here's just a trace I found of an early re

Aw: Re: [PEIRCE-L] Sign Relations, Triadic Relations, Relation Theory

2021-01-17 Thread Helmut Raulien
John,   yes, but isn´t it so, that in mathematics and symbolic logic, if the extension is known i.e. covered by proofs, an intensional term can be equivalent with an extensional one, and this is called "classical logic"? That is, if I am right, that e.g. "NOT (A AND NOT B)" is extensional, and me