- Richard Nixon (Wikipedia)
Richard Milhous Nixon (January 9, 1913 – April 22, 1994) was the 37th president of the United States, serving from 1969 to 1974. A member of the Republican Party, he previously served as a representative and senator from California and as the 36th vice president from 1953 to 1961 under President Dwight D. Eisenhower. His presidency saw the reduction of U.S. involvement in the Vietnam War, détente with the Soviet Union and China, the Apollo 11 Moon landing, and the establishment of the Environmental Protection Agency and Occupational Safety and Health Administration. Nixon’s second term ended early when he became the only U.S. president to resign from office, as a result of the Watergate scandal.
Stanford Encyclopedia of Philosophy
- Alfred Tarski (plato.standford.edu)
Alfred Tarski (1901–1983) described himself as “a mathematician (as well as a logician, and perhaps a philosopher of a sort)” (1944, p. 369). He is widely considered as one of the greatest logicians of the twentieth century (often regarded as second only to Gödel), and thus as one of the greatest logicians of all time. Among philosophers he is especially known for his mathematical characterizations of the concepts of truth and logical consequence for sentences of classical formalized languages, and to a lesser extent for his mathematical characterization of the concept of a logical constant for expressions of those same languages. Among logicians and mathematicians he is in addition famous for his work on set theory, model theory and algebra, which includes results and developments such as the Banach-Tarski paradox, the theorem on the indefinability of truth (see section 2 below), the completeness and decidability of elementary algebra and geometry, and the notions of cardinal, ordinal, relation and cylindric algebras. After a biographical sketch, this entry offers a condensed exposition of the parts of Tarski’s work that are most relevant to philosophy, his theories of truth, logical consequence and logical constants. In this exposition we have attempted to remain as close as possible to Tarski’s original presentations, reducing to a minimum the number of claims that might be controversial philosophically or exegetically. The final section on further reading refers the reader to other entries and works on critical and exegetical aspects of Tarski’s work not touched upon in this entry.