Norman Earl Steenrod (April 22, 1910–October 14, 1971) was a leading mathematician, working in the field of topology. His book The Topology of Fiber Bundles is a standard reference. In collaboration with Samuel Eilenberg, he was a founder of the axiomatic approach to homology theory. See Eilenberg-Steenrod axioms. April 22 is the 112th day of the year in the Gregorian calendar (113th in leap years). ... 1910 (MCMX) was a common year starting on Saturday (see link for calendar) of the Gregorian calendar or a common year starting on Sunday of the 13-day slower Julian calendar. ... October 14 is the 287th day of the year (288th in Leap years) in the Gregorian calendar. ... 1971 (MCMLXXI) was a common year starting on Friday (the link is to a full 1971 calendar). ... Leonhard Euler is considered by many people to be one of the greatest mathematicians of all time A mathematician is a person whose primary area of study and research is mathematics. ... Topology (Greek topos, place and logos, study) is a branch of mathematics concerned with spatial properties preserved under bicontinuous deformation (stretching without tearing or gluing); these are the topological invariants. ... Samuel Eilenberg (September 30, 1913-January 30, 1998) was a Polish mathematician. ... In mathematics, homology theory is the axiomatic study of the intuitive geometric idea of homology of cycles on topological spaces. ... In mathematics, specifically in algebraic topology, the Eilenberg-Steenrod axioms are properties that homology theories of topological spaces have in common. ...

He was born in Dayton, Ohio, and educated at Miami University and University of Michigan (A.B. 1932). He was a doctoral student of Solomon Lefschetz. He held positions at the University of Chicago from 1939 to 1942, the University of Michigan from 1942 to 1947, and then at Princeton University. Flag Seal Nickname: Gem City Location Coordinates , Government Country  State   County United States  Ohio   Montgomery Founded Incorporated April 1, 1796 1805 Mayor Rhine L. McLin Geographical characteristics Area     City 146. ... Official language(s) None Capital Largest city Columbus Columbus (largest metropolitan area is Cleveland) Area  Ranked 34th  - Total 44,825 sq. ... Miami University, founded in 1809, is the second-oldest public college west of the Allegheny Mountains. ... This article is about the University of Michigan in Ann Arbor. ... Solomon Lefschetz (3 September 1884-5 October 1972) was a U.S. mathematician who did fundamental work on algebraic topology, its applications to algebraic geometry, and the theory of non-linear ordinary differential equations. ... The University of Chicago is a private university located principally in the Hyde Park neighborhood of Chicago, Illinois. ... This article is about the University of Michigan in Ann Arbor. ... Princeton University is a coeducational private university located on an extensive campus mostly in the Borough of Princeton and partly in the Princeton Township in New Jersey, United States. ...

See also

• Steenrod algebra.
• Steenrod operation

In algebraic topology, a branch of mathematics, the Steenrod algebra is a structure occurring in the theory of cohomology operations. ... In algebraic topology, a branch of mathematics, the Steenrod algebra is a structure occurring in the theory of cohomology operations. ...

External links

• John J. O'Connor and Edmund F. Robertson. Norman Steenrod at the MacTutor History of Mathematics archive.
• http://www.usna.edu/Users/math/meh/steenrod.html