subadditivityn.
/ˌsʌbadᵻˈtɪvᵻti/, U.S. /ˌsəbædəˈtɪvᵻdi/ Mathematics and Economics.
The property or condition of being subadditive (sense 2).
ΚΠ
1941 Proc. Cambr. Philos. Soc. 37 375 Under quite general conditions, d(M) can be proved to possess the property of subadditivity also.
1966 SIAM Jrnl. Appl. Math. 14 663 Replaced by the subadditivity relation DγP(x) ≤ aDαP(x) + bDβP(x).
1986 Q. Jrnl. Econ. 101 863 Under the stated conditions, subadditivity of the cost function occurs when the value of the gain function is not less than one.
2005 K. Dowd Measuring Market Risk (ed. 2) ii. 33 Subadditivity means that aggregating risks does not increase overall risk.
This is a new entry (OED Third Edition, June 2012; most recently modified version published online March 2022).
<
n.1941