Poincaré inequality

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Notion

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Science and technology

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What Wikipedia says

In mathematics, the Poincaré inequality is a result in the theory of Sobolev spaces, named after the French mathematician Henri Poincaré. The inequality allows one to obtain bounds on a function using bounds on its derivatives and the geometry of its domain of definition.

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