limit from below
one of two directions from which a limit (Q177239) can be calculated, and which may or may not be the same as limit from above for a given sequence/series
en-US/ˈlɪmət fɹəm biˈloʊ/
one of two directions from which a limit (Q177239) can be calculated, and which may or may not be the same as limit from above for a given sequence/series