Beginning Logic¶
Lemmon, E. J. (1965). Beginning Logic. Routledge.
Cited by¶
1 citation across 1 artifact.
Each citation links to the sentence it supports in the citing article.
Domain-specific¶
- Modus Ponendo Tollens
- E. J. Lemmon describes the rule exactly this way: the negation of a conjunction plus one conjunct yields the negation of the other.
This sourceStates modus ponendo tollens as inference from a negated conjunction and one conjunct to the negation of the other.
- E. J. Lemmon describes the rule exactly this way: the negation of a conjunction plus one conjunct yields the negation of the other.
Verification¶
Does it exist? Not checked yet. This entry carries no identifier to resolve. It was extracted from the citation as written in the article, normalized, and deduplicated against the rest of the registry.
Does it back the claim? Not recorded. The single citation of this work carries no recorded support check.
Was it audited? Yes. A second, independent pass read the citation against the article text and recorded a verdict.
Support is checked per citation rather than per work — the same source can be cited soundly in one article and wrongly in another. Per-citation recording began recently, so a citation with no recorded check is a gap in the record rather than evidence it went unchecked.
See how references were verified.
Registry ID ref:e4d56e361fed · see in the full table