We prove that the functor ring-of-rational-Witt-vectors W (0)(-) becomes co-representable in the category of noncommutative motives. As an application, we obtain an immediate extension of W (0)(-) from commutative rings to schemes. Then, making use of the theory of noncommutative motives, we classify all natural transformations of the functor K-theory-of-automorphisms.
机构:
Inst Hautes Etud Sci IHES, Le Bois Marie 35 Rte De Chartres, F-91440 Bures Sur Yvette, FranceChungbuk Natl Univ, Dept Math Educ, Cheongju 28644, South Korea
Parzygnat, Arthur J.
Redden, Corbett
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机构:
Long Isl Univ, Dept Math, LIU Post,720 Northern Blvd, Brookville, NY 11548 USAChungbuk Natl Univ, Dept Math Educ, Cheongju 28644, South Korea