Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Undecidable_problem> ?p ?o }
- Undecidable_problem abstract "In computability theory and computational complexity theory, an undecidable problem is a decision problem for which it is known to be impossible to construct a single algorithm that always leads to a correct yes-or-no answer.A decision problem is any arbitrary yes-or-no question on an infinite set of inputs. Because of this, it is traditional to define the decision problem equivalently as the set of inputs for which the problem returns yes. These inputs can be natural numbers, but also other values of some other kind, such as strings of a formal language. Using some encoding, such as a Gödel numbering, the strings can be encoded as natural numbers. Thus, a decision problem informally phrased in terms of a formal language is also equivalent to a set of natural numbers. To keep the formal definition simple, it is phrased in terms of subsets of the natural numbers.Formally, a decision problem is a subset of the natural numbers. The corresponding informal problem is that of deciding whether a given number is in the set. A decision problem A is called decidable or effectively solvable if A is a recursive set. A problem is called partially decidable, semi-decidable, solvable, or provable if A is a recursively enumerable set. This means that there exists an algorithm that halts eventually when the answer is yes but may run for ever if the answer is no. Partially decidable problems and any other problems that are not decidable are called undecidable.".
- Undecidable_problem wikiPageID "15631055".
- Undecidable_problem wikiPageLength "11499".
- Undecidable_problem wikiPageOutDegree "80".
- Undecidable_problem wikiPageRevisionID "680528340".
- Undecidable_problem wikiPageWikiLink Abstract_machine.
- Undecidable_problem wikiPageWikiLink Alan_Turing.
- Undecidable_problem wikiPageWikiLink Algorithm.
- Undecidable_problem wikiPageWikiLink Algorithmic_information_theory.
- Undecidable_problem wikiPageWikiLink Axiom_of_choice.
- Undecidable_problem wikiPageWikiLink Axiomatic_system.
- Undecidable_problem wikiPageWikiLink Axiomatization.
- Undecidable_problem wikiPageWikiLink Berry_paradox.
- Undecidable_problem wikiPageWikiLink Berrys_paradox.
- Undecidable_problem wikiPageWikiLink Category:Formal_theories_of_arithmetic.
- Undecidable_problem wikiPageWikiLink Category:Logic_in_computer_science.
- Undecidable_problem wikiPageWikiLink Category:Model_theory.
- Undecidable_problem wikiPageWikiLink Category:Proof_theory.
- Undecidable_problem wikiPageWikiLink Collatz_conjecture.
- Undecidable_problem wikiPageWikiLink Collatz_problem.
- Undecidable_problem wikiPageWikiLink Complex_plane.
- Undecidable_problem wikiPageWikiLink Computability_theory.
- Undecidable_problem wikiPageWikiLink Computability_theory_(computer_science).
- Undecidable_problem wikiPageWikiLink Computable_function.
- Undecidable_problem wikiPageWikiLink Computational_complexity_theory.
- Undecidable_problem wikiPageWikiLink Computer_program.
- Undecidable_problem wikiPageWikiLink Consistency.
- Undecidable_problem wikiPageWikiLink Consistency_proof.
- Undecidable_problem wikiPageWikiLink Continuum_hypothesis.
- Undecidable_problem wikiPageWikiLink Countable_set.
- Undecidable_problem wikiPageWikiLink Countably_infinite.
- Undecidable_problem wikiPageWikiLink Decision_problem.
- Undecidable_problem wikiPageWikiLink Deductive_system.
- Undecidable_problem wikiPageWikiLink Diophantine_equation.
- Undecidable_problem wikiPageWikiLink Entscheidungsproblem.
- Undecidable_problem wikiPageWikiLink Fermats_Last_Theorem.
- Undecidable_problem wikiPageWikiLink First-order_logic.
- Undecidable_problem wikiPageWikiLink Formal_language.
- Undecidable_problem wikiPageWikiLink Formal_system.
- Undecidable_problem wikiPageWikiLink Goodsteins_theorem.
- Undecidable_problem wikiPageWikiLink Gregory_Chaitin.
- Undecidable_problem wikiPageWikiLink Group_(mathematics).
- Undecidable_problem wikiPageWikiLink Group_theory.
- Undecidable_problem wikiPageWikiLink Gxc3xb6dels_incompleteness_theorem.
- Undecidable_problem wikiPageWikiLink Gxc3xb6dels_incompleteness_theorems.
- Undecidable_problem wikiPageWikiLink Gödel_numbering.
- Undecidable_problem wikiPageWikiLink Halting_problem.
- Undecidable_problem wikiPageWikiLink Hilberts_tenth_problem.
- Undecidable_problem wikiPageWikiLink Independence_(mathematical_logic).
- Undecidable_problem wikiPageWikiLink Integer.
- Undecidable_problem wikiPageWikiLink Integer_number.
- Undecidable_problem wikiPageWikiLink Iterate.
- Undecidable_problem wikiPageWikiLink Iteration.
- Undecidable_problem wikiPageWikiLink John_Horton_Conway.
- Undecidable_problem wikiPageWikiLink Kolmogorov_complexity.
- Undecidable_problem wikiPageWikiLink Kruskals_tree_theorem.
- Undecidable_problem wikiPageWikiLink Liar_paradox.
- Undecidable_problem wikiPageWikiLink Logic.
- Undecidable_problem wikiPageWikiLink Mathematical_proof.
- Undecidable_problem wikiPageWikiLink Max_Dehn.
- Undecidable_problem wikiPageWikiLink Natural_number.
- Undecidable_problem wikiPageWikiLink Natural_numbers.
- Undecidable_problem wikiPageWikiLink Paris-Harrington_theorem.
- Undecidable_problem wikiPageWikiLink Paris–Harrington_theorem.
- Undecidable_problem wikiPageWikiLink Paul_Cohen.
- Undecidable_problem wikiPageWikiLink Paul_Cohen_(mathematician).
- Undecidable_problem wikiPageWikiLink Philosophy_of_mathematics.
- Undecidable_problem wikiPageWikiLink Polynomial.
- Undecidable_problem wikiPageWikiLink Ramsey_theorem.
- Undecidable_problem wikiPageWikiLink Ramsey_theory.
- Undecidable_problem wikiPageWikiLink Ramseys_theorem.
- Undecidable_problem wikiPageWikiLink Recursive_set.
- Undecidable_problem wikiPageWikiLink Recursively_enumerable_set.
- Undecidable_problem wikiPageWikiLink Rices_theorem.
- Undecidable_problem wikiPageWikiLink Second-order_arithmetic.
- Undecidable_problem wikiPageWikiLink Set_theory.
- Undecidable_problem wikiPageWikiLink Soundness.
- Undecidable_problem wikiPageWikiLink String_(computer_science).
- Undecidable_problem wikiPageWikiLink Topology.
- Undecidable_problem wikiPageWikiLink Truth_value.
- Undecidable_problem wikiPageWikiLink Turing_machine.
- Undecidable_problem wikiPageWikiLink Uncountable_set.
- Undecidable_problem wikiPageWikiLink Whitehead_problem.
- Undecidable_problem wikiPageWikiLink Word_problem_for_groups.
- Undecidable_problem wikiPageWikiLink Yuri_Matiyasevich.
- Undecidable_problem wikiPageWikiLink ZFC.
- Undecidable_problem wikiPageWikiLink Zermelo-Fraenkel_set_theory.
- Undecidable_problem wikiPageWikiLink Zermelo–Fraenkel_set_theory.
- Undecidable_problem wikiPageWikiLinkText "Undecidable problem".
- Undecidable_problem wikiPageWikiLinkText "algorithmically undecidable".
- Undecidable_problem wikiPageWikiLinkText "algorithmically unsolvable".
- Undecidable_problem wikiPageWikiLinkText "completely impossible".
- Undecidable_problem wikiPageWikiLinkText "problem is undecidable".
- Undecidable_problem wikiPageWikiLinkText "undecidability problem".
- Undecidable_problem wikiPageWikiLinkText "undecidability".
- Undecidable_problem wikiPageWikiLinkText "undecidable decision problems".
- Undecidable_problem wikiPageWikiLinkText "undecidable problem".
- Undecidable_problem wikiPageWikiLinkText "undecidable".
- Undecidable_problem wikiPageWikiLinkText "unsolvable".
- Undecidable_problem hasPhotoCollection Undecidable_problem.