Ruth Barcan Marcus
American philosopher
Born on: August 2, 1921Died on: February 19, 2012
Aged: 90 years 201 days (1086 months)
Nationality: American
Birth Sign: Leo
Ruth Barcan Marcus was an American academic philosopher and logician best known for her work in modal and philosophical logic.
She developed the first formal systems of quantified modal logic and in so doing introduced the schema or principle known as the Barcan formula.
Marcus, who originally published as Ruth C. Barcan, was, as Don Garrett notes "one of the twentieth century's most important and influential philosopher-logicians".
Timothy Williamson, in a 2008 celebration of Marcus' long career, states that many of her "main ideas are not just original, and clever, and beautiful, and fascinating, and influential, and way ahead of their time, but actually – I believe – true".
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