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Philosophy
The study of the truths and principles of being, knowledge, or conduct.
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Philosophy > General philosophy 
Russell's Paradox
Philosophy; General philosophy
Russell's Paradox is a discovery by Bertrand Russell that the set theory of Gottlob Frege implies a contradiction. The problem begins with the distinction between sets that are ...
Predicate Symbols
Philosophy; General philosophy
A predicate symbol or predicate variable is a type of variable that stands for some predicate in a sentence. Predicate symbols are usually coupled with one or more quantified ...
Soundness
Philosophy; General philosophy
The term sound is most frequently used to describe whether or not an argument is valid and has true premises, thereby guaranteeing the truth of its conclusion. In meta-logic, it ...
Substance Dualism
Philosophy; General philosophy
Substance Dualism is a variety of dualism in the philosophy of mind which states that two sorts of substances exist: the mental and the physical. Substance dualism is a ...
Set union
Philosophy; General philosophy
In set theory, a union of two sets is a set containing all elements of both. To indicate unions, we use the symbol ∪, and say that if Γ and Δ are sets, then Γ ∪ Δ is a set ...
Scepticism
Philosophy; General philosophy
One of the most prominent questions in the philosophy of knowledge since very early in epistemic thought is the question of scepticism (or skepticism). Scepticism asks: what do ...
Possiblity
Philosophy; General philosophy
Possiblity is a non-truth-functional operator in modal logic. It is used to indicate that something is possibly, but not necessarily, the case. The symbol ◊ is used to indicate ...
Sub-categories
- Aesthetics (78)
- Eastern philosophy (1245)
- Ethics (460)
- General philosophy (17993)
- Logic (397)
- Metaphysics (736)
- Neurophilosophy (11)
- Political philosophy (1587)
- Western philosophy (202)