protoadditive

English

Etymology

From proto- +‎ additive.

Adjective

protoadditive (not comparable)

1. (mathematics, of a function) Having the property that the result when applied to x + y is less than or equal to the sum of the result when applied to x plus the result when applied to y, for all values x and y in the domain.
   • 2015, Tomas Everaert, Marino Gran, “Some aspects of semi-abelian homology and protoadditive functors”, in arXiv‎^[1]:

     In particular the role of protoadditive functors in the study of Hopf formulae for homology is explained..