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Markowitz, Harry Max

(Encyclopedia)Markowitz, Harry Max märˈkəwĭtsˌ [key], 1927–, American economist, Ph.D. Univ. of Chicago, 1954. In the 1950s he developed a theory of “portfolio choice,” which allows investors to analyze ...

Klein, Christian Felix

(Encyclopedia)Klein, Christian Felix klīn [key], 1849–1925, German mathematician. He is noted for his work in geometry and on the theory of functions. His Erlangen program (1872) for unifying the diverse forms ...

Klein, Melanie

(Encyclopedia)Klein, Melanie, 1882–1960, British psychoanalyst, b. Vienna. She became a psychoanalyst after seeking therapy from Sandor Ferenczi, a colleague of Sigmund Freud, who encouraged her to pursue her own...

Sargent, Thomas John

(Encyclopedia)Sargent, Thomas John, 1943–, American economist, b. Pasadena, Calif., Ph.D. Harvard (1968). He has been on the faculty at the Univ. of Pennsylvania (1970–71), Univ. of Minnesota (1971–87), Univ....

Rameau, Jean Philippe

(Encyclopedia)Rameau, Jean Philippe zhäN fēlēpˈ rämōˈ [key], 1683–1764, French composer and theorist. He was organist at the cathedral in Clermont and at Notre Dame de Dijon. In the early part of his caree...

group

(Encyclopedia)group, in mathematics, system consisting of a set of elements and a binary operation a∘b defined for combining two elements such that the following requirements are satisfied: (1) The set is closed ...

Kentucky and Virginia Resolutions

(Encyclopedia)Kentucky and Virginia Resolutions, in U.S. history, resolutions passed in opposition to the Alien and Sedition Acts, which were enacted by the Federalists in 1798. The Jeffersonian Republicans first r...

capital, in economics

(Encyclopedia)capital, in economics, the elements of production from which an income is derived, usually defined with the exception of land and labor. As originally used in business, capital denoted interest-bearin...

Monboddo, James Burnett, Lord

(Encyclopedia)Monboddo, James Burnett, Lord, 1714–99, English writer, b. Scotland. A pioneer in anthropology, he wrote Of the Origin and Progress of Language (6 vol., 1774–92), in which he anticipated Darwin an...

Darwin, Charles Robert

(Encyclopedia)Darwin, Charles Robert, 1809–82, English naturalist, b. Shrewsbury; grandson of Erasmus Darwin and of Josiah Wedgwood. He firmly established the theory of organic evolution known as Darwinism. He st...