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math.AG2013
Projective geometry in characteristic one and the epicyclic category
Alain Connes, Caterina Consani
We show that the cyclic and epicyclic categories which play a key role in the encoding of cyclic homology and the lambda operations, are obtained from projective geometry in charac…
math.AG2013
Cyclic structures and the topos of simplicial sets
Alain Connes, Caterina Consani
Given a point p of the topos of simplicial sets and the corresponding flat covariant functor F from the small category Delta to the category of sets, we determine the extensions of…