nondeterministic turing machine
41Computability — You might be looking for Computable function, Computability theory, Computation, or Theory of computation. Computability is the ability to solve a problem in an effective manner. It is a key topic of the field of computability theory within… …
42Halting problem — In computability theory, the halting problem can be stated as follows: Given a description of a computer program, decide whether the program finishes running or continues to run forever. This is equivalent to the problem of deciding, given a… …
43List of computability and complexity topics — This is a list of computability and complexity topics, by Wikipedia page. Computability theory is the part of the theory of computation that deals with what can be computed, in principle. Computational complexity theory deals with how hard… …
44Mobile Membranes — Membrane systems have been inspired from the structure and the functioning of the living cells. They were introduced and studied by Gh.Paun under the name of P systems [24]; some applications of the membrane systems are presented in [15].… …
45Context-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… …
46SL (complexity) — In computational complexity theory, SL (Symmetric Logspace or Sym L) is the complexity class of problems log space reducible to USTCON ( undirected s t connectivity ), which is the problem of determining whether there exists a path between two… …
47Algorithm characterizations — The word algorithm does not have a generally accepted definition. Researchers are actively working in formalizing this term. This article will present some of the characterizations of the notion of algorithm in more detail. This article is a… …
48Complexity class — In computational complexity theory, a complexity class is a set of problems of related resource based complexity. A typical complexity class has a definition of the form: the set of problems that can be solved by an abstract machine M using… …
49Pushdown 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… …
50Automata theory — Automata is defined as a system where energy, information and material is transformed, transmitted and used for performing some function without the direct participation of man .In theoretical computer science, automata theory is the study of… …
