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Baire René-Louis (b. 1874-01-21 / d. 1932-07-05)
René-Louis Baire was a French mathematician most famous for his Baire category theorem, which helped to generalize and prove future theorems. His theory was published originally in his dissertation Sur les fonctions de variable réelles ("On the Functions of Real Variables") in 1899. Since he was young, Baire always had "delicate" health. He had developed problems with his esophagus before he attended school and he would occasionally experience severe attacks of agoraphobia. From time to time, his health would prevent him from working or studying. The bad spells became more frequent, immobilizing him for long periods of time. Over time, he had developed a kind of psychological disorder that made him unable to undertake work that required long periods of concentration. At times this would make his ability to research mathematics impossible. Between 1909 and 1914 this problem continually plagued him and his teaching duties became more and more difficult. He was given a leave of absence from the University of Dijon due to all these breakdowns. He retired from Dijon in 1925 and spent his last years living in multiple hotels that he could afford with his meager pension.
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Born 1829-09-30. Domain:Science (Physics style). Cause of death:Age
Franz Reuleaux (French: [ʁlo]; German: [ʁĝˈloː]), was a German mechanical engineer and a lecturer of the Berlin Royal Technical Academy, later appointed as the president of the academy. He was often called the father of kinematics. He was a leader in his profession, contributing to many important domains of science and knowledge. Today, he may be best remembered for the Reuleaux triangle, a curve of constant width that he helped develop as a useful mechanical form.