Talk:Natural deduction
In the section "Gentzen-style inference rules", rules are listed. The last one has a caption "PBC". It's the first time for me to find it for one of the basic i
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PBC?
In the section "Gentzen-style inference rules", rules are listed. The last one has a caption "PBC". It's the first time for me to find it for one of the basic inference rules.
Is this usage correct? It's the term "RAA" I expected.
I know "RBC" is abbrv. of "Rule by Cases", but it should be fit to ∨-elim, which appears to be unnatural for selection of only two propositions. Masuo64 (talk) 10:44, 10 October 2024 (UTC)
Introduction and elimination
There was once a #Introduction and elimination section which served as a destination for Elimination rule and Introduction rule.
The current article does not really highlight this significant feature of natural deduction, although it is of course implicit in the elaborations. It would be worth a condensed explanation, especially to serve as a target for these subtopics. Tule-hog (talk) 00:52, 15 January 2025 (UTC)
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