Steenrod algebra

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Steenrod algebra

[′sten‚räd ′al·jə·brə]
(mathematics)
The cohomology groups of a topological space have additive operations on them, which can be added and multiplied so as to form the Steenrod algebra.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.