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What (who) is complete decidability - definition

PROPERTY OF THEORIES THAT HAVE COMPUTABLE MEMBERSHIP

Semidecidable; Decidability (Logic); Semidecidability; Essentially undecidable; Decidability (computer science); Decidable (logic); Semi-decidability

Decidability (logic)

In logic, a true/false decision problem is decidable if there exists an effective method for deriving the correct answer. Zeroth-order logic (propositional logic) is decidable, whereas first-order and higher-order logic are not.

https://en.wikipedia.org/wiki/Decidability_(logic)

complete graph

SIMPLE UNDIRECTED GRAPH IN WHICH EVERY PAIR OF DISTINCT VERTICES IS CONNECTED BY A UNIQUE EDGE

Full graph; Complete Digraph; Complete digraph; K n; Tetrahedral Graph; Complete graphs

A graph which has a link between every pair of nodes. A complete bipartite graph can be partitioned into two subsets of nodes such that each node is joined to every node in the other subset. (1995-01-24)

Complete (complexity)

NOTION OF THE "HARDEST" OR "MOST GENERAL" PROBLEM IN A COMPLEXITY CLASS

Complete problem; Hard (complexity)

In computational complexity theory, a computational problem is complete for a complexity class if it is, in a technical sense, among the "hardest" (or "most expressive") problems in the complexity class.

https://en.wikipedia.org/wiki/Complete_(complexity)

Wikipedia

Decidability (logic)

In logic, a true/false decision problem is decidable if there exists an effective method for deriving the correct answer. Zeroth-order logic (propositional logic) is decidable, whereas first-order and higher-order logic are not. Logical systems are decidable if membership in their set of logically valid formulas (or theorems) can be effectively determined. A theory (set of sentences closed under logical consequence) in a fixed logical system is decidable if there is an effective method for determining whether arbitrary formulas are included in the theory. Many important problems are undecidable, that is, it has been proven that no effective method for determining membership (returning a correct answer after finite, though possibly very long, time in all cases) can exist for them.

https://en.wikipedia.org/wiki/Decidability (logic)