Sup

In mathematics, the infimum (abbreviated inf; plural infima) of a subset S {\displaystyle S} of a partially ordered set P {\displaystyle P} is a greatest element in P {\displaystyle P} that is less than or equal to each element of S , {\displaystyle S,} if such an element exists.

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Great Bas­in: His­tory of water sup­ply in one of the dri­est regions in the USA

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