Original sentence: The nonnegative portion of any of these examples is an example provided min and max are interchanged and − is replaced by "monus", defined so that x-y = 0 when x ≤ y and otherwise is ordinary subtraction
Edited sentence: The nonnegative portion of any of these examples is an example provided min and max are interchanged and − is replaced by monus, defined (in this case) so that x-y = 0 when x ≤ y and otherwise is ordinary subtraction