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the claim
Commutative context-free grammars appear in mathematical linguistics literature
the verdict
SUPPORTED
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refutedsupported
the weight of evidence
4 sources for · 0 against

Commutative context-free grammars and languages are actively studied objects of research within mathematical and formal language literature.

Evidence for · 4
On Commutative Context-Free Languages
1987 · cited by 9
Analyzes properties of commutative context-free languages and their mathematical relationships.
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The analysis

The retrieved papers include multiple works directly dedicated to studying 'commutative context-free languages' and related mathematical conjectures (such as papers [4], [5], [7], and [8]), proving that they do indeed appear in mathematical linguistics and formal language literature.

More for · 3
Partially-commutative context-free languages
2012 · cited by 8
Discusses partially-commutative context-free languages which extend commutative context-free languages in formal language theory.
Remarks about Commutative Context-Free Languages
1998 · cited by 3
Proves theorems regarding the complements of commutative context-free languages and related conjectures.
The conjecture of Fliess on commutative context-free languages
1989 · cited by 2
Investigates and disproves specific conjectures concerning commutative context-free languages.
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first checked04 Aug 2026
judged → SUPPORTED · 8104 Aug 2026
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