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.
These two expressions are equivalent.
The concept of equivalence is important in the foundations of mathematics.
isopleth; isogram; isoline; contour line
isosurface
Compound of 等 (equal) and 値 (value). The exact historical derivation is uncertain, but the word is a straightforward Sino-Japanese technical term.