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Hadamard three-circle theorem
(section)
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==History== A statement and proof for the theorem was given by [[J.E. Littlewood]] in 1912, but he attributes it to no one in particular, stating it as a known theorem. [[Harald Bohr]] and [[Edmund Landau]] attribute the theorem to [[Jacques Hadamard]], writing in 1896; Hadamard published no proof.<ref>{{harvnb|Edwards|1974|loc=Section 9.3}}</ref>
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