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About: Steenrod algebra     Goto   Sponge   NotDistinct   Permalink

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Type: yago:Abstraction100002137yago:Algebra106012726yago:Cognition100023271yago:Content105809192yago:Discipline105996646yago:KnowledgeDomain105999266yago:Mathematics106000644yago:PsychologicalFeature100023100yago:PureMathematics106003682yago:WikicatHopfAlgebrasyago:Science105999797 New Facet based on Instances of this Class

In algebraic topology, a Steenrod algebra was defined by Henri Cartan to be the algebra of stable cohomology operations for mod cohomology. For a given prime number , the Steenrod algebra is the graded Hopf algebra over the field of order , consisting of all stable cohomology operations for mod cohomology. It is generated by the Steenrod squares introduced by Norman Steenrod for , and by the Steenrod reduced th powers introduced in Steenrod and the Bockstein homomorphism for .