- In mathematics, the associative property is a property of some binary operations, which means that rearranging the parentheses in an expression will not change the result. In propositional logic, associativity is a valid rule of replacement for expressions in logical proofs.
and to rule the daye and the nyghte ad to devyde the lyghte from darcknesse. And god sawe yt it was good:
Genesis 1:18 TYN