On localization sequences in the algebraic K-theory of ring spectra

Benjamin Antieau, Tobias Barthel, David Gepner

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


We identify the K-theoretic fiber of a localization of ring spectra in terms of the K-theory of the endomorphism algebra spectrum of a Koszul-type complex. Using this identification, we provide a negative answer to a question of Rognes for n > 1 by comparing the traces of the fiber of the map K(BPn) → K(E(n)) and of K(BPn − 1) in rational topological Hochschild homology.

Original languageEnglish (US)
Pages (from-to)459-487
Number of pages29
JournalJournal of the European Mathematical Society
Issue number2
StatePublished - 2018
Externally publishedYes


  • Algebraic K-theory
  • Structured ring spectra
  • Trace methods

ASJC Scopus subject areas

  • Mathematics(all)
  • Applied Mathematics

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