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Philosophy

The study of the truths and principles of being, knowledge, or conduct.

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Disjunctive syllogism

Philosophy; General philosophy

A disjunctive syllogism (modus tollendo ponens) is a valid argument form in logic. The form of the disjunctive syllogism is: "P or Q, not P, therefore Q" It may also be written ...

Double negation rule

Philosophy; General philosophy

The double negation rule is a rule in logic that holds that a proposition is equivalent to its double negation (double negative). The double negation takes the form of "A is ...

Equivalence

Philosophy; General philosophy

Equivalence, in logic, refers to propositions or formulas that share the same logical meaning. Equivalent propositions or formulas have the same truth value regardless of the ...

Subset

Philosophy; General philosophy

In set theory, an equivalence class is a set of all objects that are related to a specific object by some equivalence relation. For example, if R is an equivalence relation on ...

Epistemology

Philosophy; General philosophy

Epistemology is the area of philosophy that is concerned with knowledge. The main concerns of epistemology are the definition of knowledge, the sources of knowledge (innate ideas, ...

False Dilemma or Dichotomy

Philosophy; General philosophy

A false dichotomy or false dilemma occurs when an argument presents two options and ignores, either purposefully or out of ignorance, other alternatives. In general, a false ...

Family Resemblance in Wittgenstein

Philosophy; General philosophy

Family resemblance as a relation occurs in Ludwig Wittgenstein’s treatment of language in Philosophical Investigations. With the family resemblance explanation, Wittgenstein ...