Closed vs Half-Open Interval Endpoints

Whether a range on an ordered axis includes its boundary points. Contrasts closed intervals [a, b] with half-open [a, b) and shows why endpoint choice prevents double-counting adjacent ranges.

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Whether a range on an ordered axis includes its boundary points. Contrasts closed intervals [a, b] with half-open [a, b) and shows why endpoint choice prevents double-counting adjacent ranges.

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