= Elliott H. Lieb
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Elliott H. Lieb proved sharp forms of the <Hardy–Littlewood–Sobolev inequality> and related inequalities. The work determines optimal constants in bounds for singular integral expressions. Sharp constants distinguish an estimate that merely controls an integral from one that identifies its exact limiting strength, with consequences for <analysis> and <mathematical physics>.<Sharp constants in the Hardy-Littlewood-Sobolev and related inequalities by Elliott H. Lieb>[Introduction and Theorem 1.1]{ref}
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