Abstract
In order to lift idempotents from characteristic p to characteristic zero, the safest method is to work over a complete discrete valuation ring of characteristic zero with a residue field of characteristic p. Yet, as a matter of fact, the completeness is a sufficient but not necessary condition. In this section, we will discuss on this question.
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© 2002 Springer-Verlag Berlin Heidelberg
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Puig, L. (2002). Lifting Idempotents. In: Blocks of Finite Groups. Springer Monographs in Mathematics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-11256-4_2
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DOI: https://doi.org/10.1007/978-3-662-11256-4_2
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-07802-6
Online ISBN: 978-3-662-11256-4
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