Eₙ Genera
Chadwick, Steven Greg · Mandell, Michael A.
Original · EN
Let R be an E₂ ring spectrum with zero odd dimensional homotopy groups. Every map of ring spectra MU to R is represented by a map of E₂ ring spectra. If 2 is invertible in pi₀(R), then every map of ring spectra MSO to R is represented by a map of E₂ ring spectra.
English translation
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