安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- logic - Decidability vs Completeness - Mathematics Stack Exchange
Proving decidability of $(\mathbb N, +)$ with Quantifier elimination and evaluating basic formulas 12 Example of incomplete, but decidable theory, and of complete and undecidable theory, question
- computability - Is Deciding Decidability Decidable? - Computer Science . . .
I am wondering if deciding the decidability of problem is a decidable problem I am guessing not, but after initial searches I cannot find any literature on this problem
- Recognizable vs Decidable - Mathematics Stack Exchange
What is difference between "recognizable" and "decidable" in context of Turing machines?
- What is decidability and completeness? - Mathematics Stack Exchange
$\begingroup$ See e g Enderton's Logic, page 142-145 for decidability: "Let $\Gamma$ be a decidable set of formulas in a reasonable language Then, the set of theorems of $\Gamma$ is effectively enumerable, and the set $\{ \varphi \mid \Gamma \vDash \varphi \}$ of formulas logically implied by $\Gamma$ is effectively enumerable
- turing machines - Decidability terms clarification - Computer Science . . .
Semi-decidability of Fullness problem for Turing Machines 1 Is the Language of all encodings of Turing Machine that at least halts on one input and outputs 0 semi-decidable?
- decidability - The undecidability of validity and satisfiability of . . .
Validity and satisfiability are either equally complicated or incomparably complicated, depending on how we compare complexities (i e many-one reductions or Turing reductions); basically, they're "dual" to each other, since $\varphi$ is valid iff $\neg\varphi$ is not satisfiable
- Relation between type-checking decidability, typability decidability . . .
My comment is wrong as I have written, it should be: "Typability refers to the process of finding a type such that the given term belongs to it and not all these types" Decidability of type-inference implies decidability of typability I'm almost sure that the reciprocal assertion does not hold, but I'm not aware of a counter-example $\endgroup$
- complexity theory - Please explain decidability and verifiability . . .
Out of the many definitions found, the following one found in this page, clearly explained decidability to me A language is called decidable if there exists a method - any method at all - to determine whether a given word belongs to that language or not However, I fail to find a parallel definition for verifiability
|
|
|