positivity
Mathematical term referring to the property of being positive (greater than zero). Often contrasted with 負値性 (negativity).
See also: 負値性
We need to check the positivity of this matrix.
Please verify whether the positivity condition is satisfied.
Compound of 正値 (positive value) + 性 (-ness, property). The exact historical derivation is uncertain; the term is used in modern mathematical contexts.