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ListarAlgebra por materia "secondary homotopy groups"

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      Secondary homotopy groups 

      Baues, Hans Joachim; Muro Jiménez, Fernando (De Gruyter, 2008-07)
      Secondary homotopy groups supplement the structure of classical homotopy groups. They yield a track functor on the track ...
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      The algebra of secondary homotopy operations in ring spectra 

      Baues, Hans Joachim; Muro Jiménez, Fernando (London Mathematical Society, 2011)
      The primary algebraic model of a ring spectrum R is the ring π∗R of homotopy groups. We introduce the secondary model π∗,∗R ...
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      The symmetric action on secondary homotopy groups 

      Baues, Hans Joachim; Muro Jiménez, Fernando (The Belgian Mathematical Society, 2008-11)
      We show that the symmetric track groups Sym(n), which are extensions of the symmetric groups Sym(n) associated to the second Stiefel-Whitney class, act as crossed modules on the secondary homotopy groups of a pointed space.