Commutative groups are called Abelian Groups in his honor. Niels Henrik ~ (1802-1829), Norwegian mathematician investigated generalizations of the binomial theorem, pioneered in the general theory of elliptic functions, and showed that elliptic functions are a generalization of trigonometric functions. After serving as a judge in his country’s national courts, Abduh became grand mufti, Egypt’s highest official interpreter of the shari’a (Islamic law). Mohammed ~ (1849-1905), Egyptian reformer pioneer of Islamic modernism and nationalism who preached Muslim unity against Western imperialism. Invented the apochromatic lens system for the microscope.Ĭharles Greeley ~ (1872-1973), American astrophysicist as director of the Smithsonian Astrophysical Observatory (Washington, D.C.) for almost four decades, he engaged in a career-long campaign to demonstrate that the Sun’s energy output varies and has a measurable effect on the Earth’s weather. ~ (1840-1905), German educator, optician, physicist and astronomer appointed professor of physics and mathematics at the University of Jena (1870) and director of the astronomical and meteorological observatories at Jena (1878).
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