A short geometric derivation of the dual Steenrod algebra
arXiv:2109.00048
Abstract
This two-page note gives a non-computational derivation of the dual Steenrod algebra as the automorphisms of the formal additive group. Instead of relying on computational tools like spectral sequences and Steenrod operations, the argument uses a few simple universal properties of certain cohomology theories.
2 pages plus references. added reference, fixed typos and a gap in a proof