Transactions of the American Mathematical Society

Author(s): Donald Yau
Journal: Trans. Amer. Math. Soc. 357 (2005), 1341-1348.
MSC (2000): Primary 55P15; Secondary 55N15, 55P60, 55S25
Posted: May 10, 2004
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Abstract: Sufficient conditions on a space are given which guarantee that the

-theory ring is an invariant of the adic genus. An immediate consequence of this result about adic genus is that for any positive integer

, the power series ring $\mathbf{Z} \lbrack \lbrack x_1, \ldots , x_n \rbrack \rbrack$ admits uncountably many pairwise non-isomorphic $\lambda$ -ring structures.

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