what is precise definition of proposition?
84416
Sentence vs proposition
47926
What is the logical form of the definition of validity?
9158
Proving that a propositional theory of any cardinality has an independent set of axioms
70500
Implies ($\Rightarrow$) vs. Entails ($\models$) vs. Provable ($\vdash$)
46068
How should "deceptively" actually be used?
18287
Distinction between equality, logical equivalence and biconditionality.
137203
Measurable cardinal existence condition
73231
Why in implication, if premise is false then implication is true?
145128
Understanding of Material Implication
91861
Propositional Logic: p → q, ¬p → r, ¬q → ¬r ⊢ q
24480
Can there be true conclusions without assumptions?
6166
Is the following statement provable?
122015
"This statement is false" - Propositional Logic
19209
Why is compactness in logic called compactness?
146251
Looking for succinct way of describing the act of solidifying an idea into reality
129185
Understanding the truth value for ⇏ when antecedent is false and consequent is true.
70166
Why is the universal quantifier $\forall x \in A : P(x)$ defined as $\forall x (x \in A \implies P(x))$ using an implication?