Definition:Unbounded Closed Real Interval/Also known as
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Unbounded Closed Real Interval: Also known as
Some sources refer to the unbounded closed real intervals as half-open infinite (real) intervals.
Some sources use the term semi-infinite (closed) intervals.
Sources
- 1970: Arne Broman: Introduction to Partial Differential Equations ... (previous) ... (next): Chapter $1$: Fourier Series: $1.1$ Basic Concepts: $1.1.1$ Definitions
- 1991: Felix Hausdorff: Set Theory (4th ed.) ... (previous) ... (next): Preliminary Remarks
- 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): interval: $\text {(v)}$, $\text {(vii)}$