Semi-continuity

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Notion

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Science and technology

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What Wikipedia says

In mathematical analysis, semicontinuity (or semi-continuity) is a property of extended real-valued functions that is weaker than continuity. An extended real-valued function

Excerpt from the Wikipedia article “Semi-continuity”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Mktyscn, Public domain, via Wikimedia Commons.