noun
closed interval
Mathematical term for an interval that includes its endpoints, often denoted with square brackets like [a, b]. Contrasts with 開区間 (open interval).
See also: 開区間
閉区間 [0, 1] には 0 と 1 が含まれる。
The closed interval [0, 1] includes 0 and 1.
この関数
This function is continuous on a closed interval.