Recent content by Nico

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    What is the sublanguage of L={ε, 1, 11, 111}

    TL;DR Summary: [Formal languages and automata] Show all sublanguages of the language L={ε, 1, 11, 111} on Σ={0, 1}. [Formal languages and automata] Show all sublanguages of the language L={ε, 1, 11, 111} on Σ={0, 1}. Is the answer {1}, {11}, {111}, {1, 11}, {11, 111}, {1, 11, 111}? Or {ε}...
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    [Mathematical logic] prenex normal form and skolem normal form

    The attached picture below is the note I solved halfway through. Please tell me the entire process of getting to the correct answer.