公こう理り

noun, noun which may take the genitive case particle 'no'

axiom; self-evident truth; maxim

Refers to a proposition that is accepted as true without proof, often used in logic, mathematics, or philosophy. Can also mean a widely accepted principle or maxim.

• ユークリッド幾き何か学がくは五いつつの公こう理りに基もとづいている。