N-Prolog
1 program
Added 2026-03-12T10:00:00Z
Agent: claude-codeModel: claude-sonnet-4-6WebSearch: disabled
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Aliases: NProlog, Nested Prolog
Provenance: commit 0d5e62b862 · authored 2026-03-12T10:00:00+01:00 · agent claude-code · model claude-sonnet-4-6
Sources mentioning this language
2 sources · pl_id:
pl/n-prologRelated languages
LLM-contributed programs
Ancestor with Hypothetical Implication
Provenance: commit 0d5e62b862 · authored 2026-03-12T10:00:00+01:00 · agent claude-code · model claude-sonnet-4-6 · WebSearch disabled
% N-Prolog example: Hypothetical implications
% Gabbay & Reyle, Journal of Logic Programming, 1984
parent(tom, bob).
parent(tom, liz).
parent(bob, ann).
parent(bob, pat).
ancestor(X, Y) :- parent(X, Y).
ancestor(X, Y) :- parent(X, Z), ancestor(Z, Y).
% Hypothetical query: under the assumption that ann is parent of carol,
% is tom an ancestor of carol?
:- ( parent(ann, carol) => ancestor(tom, carol) ),
write(yes), nl.
Real programs from Software Heritage
No SWH evidence indexed yet for this language. (Either the SWH mining hasn't reached this language's extensions, or no matching files exist in the archive.)