A higher chromatic analogue of the image of J

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We prove a higher chromatic analogue of Snaith’s theorem which identifies the K –theory spectrum as the localisation of the suspension spectrum of CP1 away from the Bott class; in this result, higher Eilenberg–MacLane spaces play the role of CP1 D K.Z; 2/. Using this, we obtain a partial computation of the part of the Picard-graded homotopy of the K.n/–local sphere indexed by powers of a spectrum which for large primes is a shift of the Gross–Hopkins dual of the sphere. Our main technical tool is a K.n/–local notion generalising complex orientation to higher Eilenberg–MacLane spaces. As for complex-oriented theories, such an orientation produces a one-dimensional formal group law as an invariant of the cohomology theory. As an application, we prove a theorem that gives evidence for the chromatic redshift conjecture.

Original languageEnglish (US)
Pages (from-to)1033-1093
Number of pages61
JournalGeometry and Topology
Issue number2
StatePublished - Mar 17 2017

Bibliographical note

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© 2017, Mathematical Sciences Publishers. All rights reserved.


  • Chromatic homotopy theory
  • Picard group
  • Redshift conjecture
  • Snaith theorem


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