noun
equivalency; equivalency property
Technical term used in mathematics, logic, and computer science to denote a property or relation of equivalence.
この定理は、二つの命題の同値性を示している。
This theorem demonstrates the equivalency of the two propositions.
同値性の概念は、数学の多くの分野で重要である。
The concept of equivalency is important in many fields of mathematics.
Compound of 同値 (dōchi, 'equivalence') + 性 (-sei, '-ness, property'). The derivation is transparent from its components.