Bounded Above Subset of Real Numbers/Examples/Strictly Negative Real Numbers
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Example of Bounded Above Subset of Real Numbers
Let $I$ be the unbounded open real interval defined as:
- $I := \openint \gets 0$
Then $I$ is bounded above.
$0$ is an upper bound of $I$.
Sources
- 1975: W.A. Sutherland: Introduction to Metric and Topological Spaces ... (previous) ... (next): $1$: Review of some real analysis: $\S 1.1$: Real Numbers: Example $1.1.1 \ \text{(b)}$