nLab
Adams e-invariant

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Idea

The Adams e-invariant (Adams 66, section 7) is a collection of group homomorphisms from the stable homotopy groups of spheres to cyclic groups of certain order. Its kernel characterizes the coimage of the J-homomorphism.

References

The definition is due to section 7 of

  • John Adams, On the groups J(X)J(X) IV, Topology 5: 21,(1966) Correction, Topology 7 (3): 331 (1968) (pdf)

Reviews include

  • Hiroaki Hamanaka, Adams ee-invariant, Toda bracket and [X,U(n)][X, U(n)], J. Math. Kyoto Univ. Volume 43, Number 4 (2003), 815-827. (Euclid)

Last revised on November 17, 2013 at 23:14:14. See the history of this page for a list of all contributions to it.