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15
Math.TechQA.Club
2016-10-11 21:09:01
43
Views
What is a term for two events where the absense of one assures the absense of the other?
Published on
11 Oct 2016 - 21:09
#logic
#terminology
#propositional-calculus
254
Views
Prove $(\lnot \lnot A \implies A) \implies (A \lor \lnot A)$ in propositional logic
Published on
12 Oct 2016 - 1:04
#logic
#propositional-calculus
783
Views
Difference between "⊢" and "⊨"
Published on
08 Apr 2026 - 12:03
#logic
#propositional-calculus
#first-order-logic
29
Views
True for every formula.
Published on
12 Oct 2016 - 17:33
#logic
#propositional-calculus
5.1k
Views
Why is SAT the complement of TAUTOLOGY?
Published on
25 Mar 2026 - 23:37
#logic
#propositional-calculus
#satisfiability
43
Views
Explain if I understand correctly.
Published on
13 Oct 2016 - 7:49
#logic
#propositional-calculus
59
Views
Application of Conditionals to Sets
Published on
29 Mar 2026 - 7:38
#logic
#propositional-calculus
#predicate-logic
#quantifiers
714
Views
What is the definition of the complement of a decision problem?
Published on
23 Feb 2026 - 10:22
#logic
#propositional-calculus
#satisfiability
#decision-problems
498
Views
Tautologies in Boolean formulas using the bi-conditional connective
Published on
13 Oct 2016 - 20:51
#propositional-calculus
117
Views
Natural Deduction stuck
Published on
26 Mar 2026 - 18:30
#logic
#propositional-calculus
#natural-deduction
125
Views
Prove $q \lor r \vdash (q \land s) \lor (s \to r)$ using natural deduction
Published on
26 Mar 2026 - 18:40
#logic
#propositional-calculus
#predicate-logic
#natural-deduction
5.3k
Views
Converting DNF to CNF and vice versa
Published on
25 Mar 2026 - 10:58
#logic
#propositional-calculus
#conjunctive-normal-form
#disjunctive-normal-form
207
Views
Is the system of connectives $\{\lnot, \leftrightarrow\}$ complete?
Published on
16 Oct 2016 - 16:51
#logic
#propositional-calculus
189
Views
Does James like algebra or analysis?
Published on
27 Mar 2026 - 20:11
#propositional-calculus
#puzzle
#word-problem
38
Views
Find a system of connectives which is not complete?
Published on
16 Oct 2016 - 21:34
#logic
#propositional-calculus
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