In this work. the notion of function of bounded variation in 2-normed spaces was established (Definition 4. 2). the set of functions of bounded $ (2. https://www.markbroyard.com/hot-save-turbo-air-m3f24-1-n-29-wide-m3-series-reach-in-freezer-featuring-one-solid-door-energy-star-on-sale-top-super/