REC Flashcards

1
Q
  • Given property P over RE, tell if Lp is REC/RE/NON-RE.
    • Exams: 19-01-22, 20-01-27, 20-02-17, 21-01-25, 21-02-12, 21-06-28,
    • PDF: 3.4, 3.5, 3.6, 3.7, 3.8,
A

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2
Q
  • Given L1 and L2, tell if intersection/concatenation/… are RE/REC/…
    • Exams: 19-01-22, 21-01-25,
    • PDF: 3.10,
A

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3
Q
  • Given L={M(enc),…}, tell if L is RE (reduction)
    • Exams: 19-02-13, 19-01-22, 19-09-13, 21-02-12, 21-06-28,
    • PDF: 3.9, 3.10.3, 3.11, 3.12,
A

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4
Q
  • Given L, specify Turing machine M that accepts it and stops for each input.
    • Exams: 19-06-28,
    • PDF: 3.1, 3.2, 3.3,
A

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5
Q
  • Theory:
    • Define the notion of property of the languages generated by TMs and state Rice’s theorem. Provide the proof of Rice’s theorem that we have developed in class. (21-09-03,
A

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6
Q
  • Theory:
    • definizione di macchina di Turing nondeterministica e la definizione di linguaggio da questa accettato. Dimostri che ogni linguaggio accettato da una macchina di Turing nondeterministica può essere accettato da una macchina di Turing deterministica.
A

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7
Q
  • Theory:
    • Richiamare la definizione del linguaggio Lne. Dimostrare che Lne non appartiene alla classe REC. Attenzione: è richiesta la dimostrazione svolta in classe per questo teorema, non utilizzare il teorema di Rice. (20-02-17,
A

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