closed interval

(mathematics) an interval in the real number line which contains its supremum and infimum.

Japanese Meaning

閉区間（実数直線上の区間で、その最小値と最大値（または端点）が含まれる区間）

To prove the theorem, we restrict our attention to the closed interval [0,1].

定理を証明するために、閉区間[0,1]に注目します。

Sense（1）

(mathematics) an interval in the real number line which contains its supremum and infimum.

closed intervals

（ plural ）