free automaton
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Automaton — This article is about a self operating machine. For other uses of Automaton, see Automaton (disambiguation) or Automata (disambiguation). An automaton (plural: automata or automatons ) is a self operating machine. The word is sometimes used to… … Wikipedia
Deterministic pushdown automaton — In automata theory, a pushdown automaton is a finite automaton with an additional stack of symbols; its transitions can take the top symbol on the stack and depend on its value, and they can add new top symbols to the stack. A deterministic… … Wikipedia
Pushdown automaton — In automata theory, a pushdown automaton (PDA) is a finite automaton that can make use of a stack containing data. Operation Pushdown automata differ from normal finite state machines in two ways: # They can use the top of the stack to decide… … Wikipedia
Deterministic context-free language — A deterministic context free language is a formal language which is defined by a deterministic context free grammar.[1] The set of deterministic context free languages is called DCFL[2] and is identical to the set of languages accepted by a… … Wikipedia
Nested stack automaton — In automata theory, a nested stack automaton is a finite automaton that can make use of a stack containing data which can be additional stacks.[1] A nested stack automaton may read its stack, in addition to pushing or popping it. A nested stack… … Wikipedia
Deterministic automaton — is a concept of automata theory in which the outcome of a transition from one state to another given a certain input can be predicted for every occurrence. A common deterministic automaton is a deterministic finite state machine (sometimes… … Wikipedia
Context-free grammar — In formal language theory, a context free grammar (CFG) is a formal grammar in which every production rule is of the form V → w where V is a single nonterminal symbol, and w is a string of terminals and/or nonterminals (w can be empty). The… … Wikipedia
Context-free language — In formal language theory, a context free language is a language generated by some context free grammar. The set of all context free languages is identical to the set of languages accepted by pushdown automata. Contents 1 Examples 2 Closure… … Wikipedia
Cellular automaton — A cellular automaton (plural: cellular automata) is a discrete model studied in computability theory, mathematics, theoretical biology and microstructure modeling. It consists of a regular grid of cells , each in one of a finite number of states … Wikipedia
Deterministic context-free grammar — In formal grammar theory, the deterministic context free grammars (DCFGs) are a proper subset of the context free grammars. The deterministic context free grammars are those a deterministic pushdown automaton can recognize. A DCFG is the finite… … Wikipedia
Quantum dot cellular automaton — Quantum Dot Cellular Automata (sometimes referred to simply as quantum cellular automata, or QCA) Any device designed to represent data and perform computation, regardless of the physics principles it exploits and materials used to build it, must … Wikipedia
