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least upper bound

American  

noun

Mathematics.

  1. an upper bound that is less than or equal to all the upper bounds of a particular set. 3 is the least upper bound of the set consisting of 1, 2, 3. lub

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We also talked about the relationship between the Intermediate Value Theorem and the least upper bound property, which you can read about here.

From Scientific American • Feb. 17, 2019

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