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the claim
Context-free grammars define formal languages through production rules
the verdict
SUPPORTED
the evidence backs this
refutedsupported
the weight of evidence
5 sources for · 0 against

Context-free grammars are a standard formal grammar formalism in computer science that define formal languages through their production rules.

Evidence for · 5
Wikipedia: Context-free grammar
cited by 0
Reference article covering this claim directly
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More for · 4
Wikipedia: Formal grammar
cited by 0
Reference article covering this claim directly
OpenAIRE: Analyses of the case studies for the efficiency of pumping lemma for the context-free languages
2023 · cited by 0
States context-free languages are sets of languages that can be defined by context-free grammars.
OpenAIRE: Rough-Set-Like Approximation Spaces for Formal Languages
2022 · cited by 0
References languages generated by context-free grammars.
OpenAIRE: Powerful and NP-Complete: Hypergraph Lambek Grammars
2021 · cited by 0
Mentions context-free grammars generating formal string languages.
Everything we examined (11) — 8 independent sources
This check searched the claim as stated. It did not run a separate search for evidence against it.
  1. Wikipedia: Context-free grammarreferencesame source L1supports
  2. Wikipedia: Formal grammarreferencesame source L1supports
  3. Wikisource: 1911 Encyclopædia Britannica/Grammarreferencesame source L2no side takennot shown: read and judged not to bear on this claim
  4. Wikisource: Encyclopædia Britannica, Ninth Edition/Grammarreferencesame source L2no side takennot shown: read and judged not to bear on this claim
  5. Wikisource: Steelman language requirementsreferencesame source L2no side takennot shown: read and judged not to bear on this claim
  6. OpenAIRE: Analyses of the case studies for the efficiency of pumping lemma for the context-free languagespeer-reviewedsupports
  7. OpenAIRE: Church-Rosser controlled rewriting systems and equivalence problems for deterministic context-free languagespeer-reviewedno side takennot shown: read and judged not to bear on this claim
  8. OpenAIRE: Rough-Set-Like Approximation Spaces for Formal Languagespeer-reviewedsupports
  9. OpenAIRE: Finite Approximations and Similarity of Languagespeer-reviewedno side takennot shown: read and judged not to bear on this claim
  10. OpenAIRE: Powerful and NP-Complete: Hypergraph Lambek Grammarspeer-reviewedsupports
  11. OpenAIRE: Cyclic Shift on Multi-component Grammarspeer-reviewedno side takennot shown: read and judged not to bear on this claim
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first checked05 Aug 2026
judged → SUPPORTED · 7505 Aug 2026
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