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Modules over the integral dual Steenrod algebra as linear functors

First I should say that Clausen-Scholze are not considering functors which preserve direct sums, but rather all functors. (This is likely why, in the end, one needs to know something about the homolog …
Dylan Wilson's user avatar
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5 votes

Steenrod operations in algebraic geometry

Not sure if this counts, but a much older application of $Sq^1$ (appearing as a Bockstein) and some of its cousins appears in Serre's paper on Witt vector cohomology. He constructed a family of operat …
Dylan Wilson's user avatar
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