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universality_context_free_grammar (399B)

      1 # Universality context free grammar
      2 
      3 [universality_problem] for [CFGs]: it is [undecidable]
      4 
      5 - for [uCFGs]: [universality_context_free_grammar_unambiguous]
      6 - for [linear_CFGs]: [linear_CFG_universality]
      7 
      8 Up: [universality_problem]
      9 
     10 See also: [universality_automata]
     11 
     12 Aliases: CFG universality, context free grammar universality, universality CFG, universality problem CFG, universality problem CFGs