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Algebraic extensions of an Eilenberg-MacLane spectrum (1111.7220v1)
Published 30 Nov 2011 in math.AT
Abstract: The paper gives an answer to the question whether the Galois, separable or etale extension of an Eilenberg-MacLane spectrum in the category of ring spectra is again an Eilenberg-MacLane spectrum. We get a full answer in the Galois case. The question in separable and etale cases is answered only under additional hypothesis.
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