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For questions about ring spectra (in homotopy theory).

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1 answer
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What are explicit obstructions to realizability of formal group laws as complex-oriented rin...

Recall that a complex-oriented spectrum is a ring spectrum E with a map $MU \to E$. Analogously, a ring with a (1-d commutative) formal group law is (represented by) a ring $R$ with a map $L \to R$ ( …
Catherine Ray's user avatar