Translation guide
The principle of identity is a logical and philosophical concept stating that each thing is the same as itself. In Japanese, it is primarily expressed through formal philosophical terms, most commonly 同一律 (どういつりつ).
The formal logical law that a thing is identical to itself, often expressed as A = A.
The standard term for the principle of identity in logic and philosophy. Used in academic and formal contexts.
同一律は、すべての事物はそれ自身と同一であると述べる。
The principle of identity states that every thing is identical to itself.
A more descriptive phrase meaning 'principle of identity'. Less common than 同一律 but still used in philosophical texts.
同一性の原理は論理学の基本法則の一つです。
The principle of identity is one of the fundamental laws of logic.
Literally 'principle of self-identity'. Used in some philosophical contexts to emphasize the self-referential aspect.
自己同一性の原理は、存在論において重要な役割を果たす。
The principle of self-identity plays an important role in ontology.
The 'principle of identity' is a technical term in logic and philosophy. It is not used in everyday conversation. Avoid trying to translate it literally outside of academic contexts.