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Ludwig Otto Blumenthal (20 July 1876 – 13 November 1944) was a German mathematician and professor at RWTH Aachen University. He was born in Frankfurt, Prussia. A student of David Hilbert, Blumenthal w ...
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Lisette Model (born Elise Amelie Felicie Stern; November 10, 1901 – March 30, 1983) was an Austrian-born American photographer.
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