noun, noun which may take the genitive case particle 'no'
equal value; equivalence
Technical term used in mathematics, logic, and formal contexts to express that two things have the same value or are equivalent. Often used in the pattern 等値である or 等値の.
これらの二つの式は等値である。
These two expressions are equivalent.
等値の概念は数学の基礎で重要だ。
The concept of equivalence is important in the foundations of mathematics.
Compound of 等 (equal) and 値 (value). The exact historical derivation is uncertain, but the word is a straightforward Sino-Japanese technical term.