Definition:Half-Open Real Interval/Also defined as
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Half-Open Real Interval: Also defined as
Some sources, when defining a half-open real interval, require that $a < b$.
This is to eliminate the degenerate case where the interval is the empty set.
Sources
- 1970: Arne Broman: Introduction to Partial Differential Equations ... (previous) ... (next): Chapter $1$: Fourier Series: $1.1$ Basic Concepts: $1.1.1$ Definitions