Claim: Nachum Ish Gamzu was the teacher of Rabbi Akiva, and is known by interpreting the whole Torah according to the rule of "ribbui u-mi'uṭ".
Evidence: Nachum was the teacher of Rabbi Akiva, and taught him the exegetical principle of inclusion and exclusion ("ribbui u-mi'uá¹­"). Only one halakhah of his has been preserved; but it is known that he interpreted the whole Torah according to the rule of "ribbui u-mi'uá¹­".