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Global structure of the mod two symmetric algebra,<i>H</i><sup>โ</sup>(<i>BO</i>; ๐ฝ<sub>2</sub>), over the Steenrod algebra
The algebra S of symmetric invariants over the field with two elements is an unstable algebra over the Steenrod algebra A, and is isomorphic to the mod two cohomology of BO, the classifying space for vector bundles. We provide a minimal presentation for S in the category of unstable A-algebras, โฆ