Let A be a ring with involution in which 2 is invertible, ε be 1 or −1, and s(∈ A) be a central regular element such that s* = s. A transfer homomorphism εW′0(A/s) → ε W′1(A) for Witt cogroups is constructed and a projection formula is proved. Bibliography: 11 titles.
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Translated from Zapiski Nauchnykh Seminarov POMI, Vol. 356, 2008, pp. 149–158.
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Kopeiko, V.I. A transfer morphism for Witt cogroups. J Math Sci 156, 937–942 (2009). https://doi.org/10.1007/s10958-009-9299-0
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DOI: https://doi.org/10.1007/s10958-009-9299-0