conditional and contrapositive
+
converse and inverse
conditional and contrapositive + converse and inverse
conditional and contrapositive + converse and inverse
conditional and contrapositive + converse and inverse
The statement "if not p, then not q" always has the same truth value as the conditional "if p, then q." They are logically equivalent.
Truth and lies are concepts that relate to the accuracy or falsehood of statements. Truth refers to statements that accurately reflect reality, while lies are intentionally false statements. It is important to critically evaluate statements to determine their truthfulness and avoid being misled by misinformation.
Logically equivalent statements are expressions or propositions that have the same truth value in every possible scenario. This means that if one statement is true, the other must also be true, and if one is false, the other must be false as well. For example, the statements "If P, then Q" and "If not Q, then not P" (contrapositive) are logically equivalent. Logical equivalence is often denoted using symbols such as "≡" or "⇔".
Coherence theory of truth states that truth is determined by the coherence or consistency of a set of beliefs or statements within a given system. This theory believes that truth is a property of a related group of constituent statements when they are logically interconnected and mutually support each other.
true
yes, it is called the truth value
yes
Logical inference refers to the process of deriving new statements or conclusions from existing premises using rules of logic, whereas logical equivalence indicates that two statements have the same truth value in all possible scenarios. Inference is about the relationship between premises and conclusions, while equivalence focuses on the relationship between two propositions themselves. Essentially, inference moves from known truths to new truths, while equivalence shows that two statements can be substituted for one another without changing the truth of an argument.
Slander. Calumny means making false and/or malicious statements.