Riemann Integration in Euclidean Space
A straightforward analogue of a closed interval in higher dimensions is a Cartesian product of closed intervals. Although many authors prefer to call them “intervals”, we shall refer to them as cuboid s. They are best visualised as rectangles in ℝ2 and as “boxes” in ℝ3.
KeywordsCharacteristic Function Euclidean Space Interior Point Bounded Function Lower Face
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