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              Abstract
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 We construct a groupoid equivariant Kasparov class for transversely oriented
 foliations in all codimensions. In codimension 1 we show that the Chern character of
 an associated semifinite spectral triple recovers the Connes–Moscovici cyclic cocycle
 for the Godbillon–Vey secondary characteristic class.
  
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              Keywords
              
                foliation, Godbillon–Vey, bivariant $K$-theory,
                equivariant, spectral triple
               
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              Mathematical Subject Classification 2010
              
                Primary: 19K35
               
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              Milestones
              
                Received: 23 November 2018
               
              
                Revised: 21 October 2019
               
              
                Accepted: 13 November 2019
               
              
                Published: 20 June 2020
               
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