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  2. Regular grammar - Wikipedia

    en.wikipedia.org/wiki/Regular_grammar

    Some authors call this type of grammar a right-regular grammar (or right-linear grammar) [1] and the type above a strictly right-regular grammar (or strictly right-linear grammar). [2] An extended left-regular grammar is one in which all rules obey one of A → w, where A is a non-terminal in N and w is in Σ * A → Bw, where A and B are in N ...

  3. List of formal language and literal string topics - Wikipedia

    en.wikipedia.org/wiki/List_of_formal_language...

    ECLR-attributed grammar; Finite language; Formal grammar; Formal language; Formal system; Generalized star height problem; Kleene algebra; Kleene star; L-attributed grammar; LR-attributed grammar; Myhill-Nerode theorem; Parsing expression grammar; Prefix grammar; Pumping lemma; Recursively enumerable language; Regular expression; Regular ...

  4. Sentence clause structure - Wikipedia

    en.wikipedia.org/wiki/Sentence_clause_structure

    Example: Abdul is happy. Jeanne is a person. I am she. Subject + Verb (transitive) + Indirect Object + Direct Object Example: She made me a pie. This clause pattern is a derivative of S+V+O, transforming the object of a preposition into an indirect object of the verb, as the example sentence in transformational grammar is actually "She made a ...

  5. Regular language - Wikipedia

    en.wikipedia.org/wiki/Regular_language

    In theoretical computer science and formal language theory, a regular language (also called a rational language) [1] [2] is a formal language that can be defined by a regular expression, in the strict sense in theoretical computer science (as opposed to many modern regular expression engines, which are augmented with features that allow the recognition of non-regular languages).

  6. Chomsky hierarchy - Wikipedia

    en.wikipedia.org/wiki/Chomsky_hierarchy

    Regular languages are commonly used to define search patterns and the lexical structure of programming languages. For example, the regular language = {| >} is generated by the Type-3 grammar = ({}, {,},,) with the productions being the following. S → aS S → a

  7. English clause syntax - Wikipedia

    en.wikipedia.org/wiki/English_clause_syntax

    For example, clauses can be questions, [2]: 161 but questions are not propositions. [3] A syntactic description of an English clause is that it is a subject and a verb. [4] But this too fails, as a clause need not have a subject, as with the imperative, [2]: 170 and, in many theories, an English clause may be verbless.

  8. Context-free grammar - Wikipedia

    en.wikipedia.org/wiki/Context-free_grammar

    It is decidable whether a given grammar is a regular grammar, [f] as well as whether it is an LL grammar for a given k≥0. [26]: 233 If k is not given, the latter problem is undecidable. [26]: 252 Given a context-free grammar, it is not decidable whether its language is regular, [27] nor whether it is an LL(k) language for a given k.

  9. Question - Wikipedia

    en.wikipedia.org/wiki/Question

    Questions come in a number of varieties. For instance; Polar questions are those such as the English example "Is this a polar question?", which can be answered with "yes" or "no". Alternative questions such as "Is this a polar question, or an alternative question?" present a list of possibilities to choose from.

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