atomic proposition

philosophy

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June 18, 2026

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An atomic proposition, in philosophy, is a statement that cannot be broken down into simpler statements. It is considered an irreducible unit of language that corresponds to an atomic fact.12

An atomic fact is the most basic type of fact, asserting that a specific thing possesses a certain quality. For example, "This is red" is an atomic proposition, and the fact it describes is an atomic fact.2

The theory of Logical Atomism, developed by Bertrand Russell and Ludwig Wittgenstein, proposes that language, like reality, is composed of these fundamental, indivisible units. Atomic propositions serve as the building blocks for more complex statements, known as molecular propositions.2

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Extensions to other fields
, an atomic proposition) and an atomic fact; i.e., for each atomic fact, there is a corresponding atomic proposition. An atomic proposition is one that asserts that a certain thing has a certain quality—e.g., “This is red.” An atomic fact is the simplest kind of fact and…
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, an atomic proposition) and an atomic fact; i.e., for each atomic fact, there is a corresponding atomic proposition. An atomic proposition is one that asserts that a certain thing has a certain quality—e.g., “This is red.” An atomic fact is the simplest kind of fact and…
Read More