Ruth Barcan Marcus (born 1921) is the philosopher and logician after whom the Barcan formula is named. She was awarded a Ph.D. by Yale University in 1946. A philosopher is a person who thinks deeply regarding people, society, the world, and/or the universe. ... A logician is a philosopher, mathematician, or other whose topic of scholarly study is logic. ... In quantified modal logic, the Barcan formula and the converse Barcan formula state possible relationships between quantifiers and modalities. ...

From 1962-1970 she was the first Chair of the Philosophy Department at the University of illinois-Chicago. From 1970-73 she was a Professor of Philosophy at Northwestern University and from 1973-1991 Halleck Professor of Philosophy at Yale University. Since 1991 she has been a visiting Distinguished Professor one quarter a year at the university of California-Irvine. She is now Emeritus and a Senior Research Scholar at Yale University Yale University is a private university in New Haven, Connecticut. ...

Guggenheim Fellow (l952) National Science Foundation(1963);Rockefeller Foundation - Bellagio (1973 and 1990); Center for Advanced Study in the Behavioral Sciences (l979) University of Edinburgh Humanities Institute (1983) Wolfson College of Oxford University (1985,1986); Clare Hall of Cambridge University (1988) National Humaniies Center, (1992-93)

Honors.

Fellow, American Academy of Arts and Sciences )(1977--); Medal of the College de France (1986; Honorary Doctorate of Humane Letters , University of Illinois (1995); WilburCross Medalof Yale University, 2000; Permanent Membewr of the Common Room, Clare Hall) 1086---. Phi Beta Kappa (1941); Membre, Institut Internatioanlde Philosophie , continuing

Professional Offices and Service (partial list) Chair of the Board of Officers, American Philosophical Association, (1977-83); President, Association for Symbolic Logic 1983-86; President, International Institut de Philosohie (1989-92) and President Honoraire (continuing)

Professor Marcus has written or edited the following books: Look up book in Wiktionary, the free dictionary. ...

• The Logical Enterprise, ed. with A. Anderson, R. Martin, Yale, 1995
• Logic, Methodology and Philosophy of Science, VII, eds. R. Barcan Marcus et al., North Holland, 1986
• Modalities: Philosophical Essays, Oxford University Press, 1993. Paperback; 1995

She is daughter of Sam and Rose Barcan in the Bronx, NY. Her father Samual Barcan had a promising career in the Jewish press, working for the Jewish Yiddish Forward, and philanthropy work though The Workman's Circle, cut short by an early death. She was one of 3 sisters, the others being Hilda and Esther, all comprising the Barcan Family (hence the "Barcan Formula") with includes Seena Stein, Real Estate broker for Newmark Corporation and Helmsey in New Jersey, Neil Goldmacher, Real Estate broker in New York City for Newmark Corporation, Ruben Safir, founder of several Free Software groups, such as NYLXS in New York, David Fishback, prominant Washington, DC labor lawyer, Rachel Heiman, anthropologist at The New School in NYC, among others The Bronx is one of the five boroughs of New York City in the United States. ... The Workmans Circle, one of which is located on 33rd Street in New York city, is a Jewish cultural organization with labor roots which has branches throughout the United States. ... NYLXS - The New York Free Software - GNU/Linux Scene Founded in late 2001, NYLXS is one of New York Citys more proactive Free Software/GNU Linux education groups. ... Official language(s) None, English de facto Capital Albany Largest city New York City Area  - Total  - Width  - Length  - % water  - Latitude  - Longitude Ranked 27th 141,205 km² 455 km 530 km 13. ... Aerial photo (looking NW) of the Washington Monument and the White House in Washington, DC. Washington, D.C., officially the District of Columbia (also known as D.C.; Washington; the Nations Capital; the District; and, historically, the Federal City) is the capital city and administrative district of the United... The New School, previously known as New School University, is an institution of higher learning in New York City. ...

External links

• Yale UPhilosophy Faculty Biography: Ruth Marcus