Spahn Witt vectors (Rev #2, changes)

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Prüfer group

In Let the Prüfer$p{F}_p$ p F_p -group every be element the has finite precisely field with$p$ -elements In the Prüfer$p$-group every element has precisely $p$ $p$-th roots.

It is unique up to isomorphism.

Tate module

$End(Pr$

Prüfer $p$-group

$p$-group

Sylow $p$-subgroup of $Q/Z$ consisting of those elements whose order is a power of $p$: $Z(p^\infty)=Z[1/p]/Z$

Frobenius automorphism

(relative Frobenius lifts some problems with the plain frobenius of shemes)

Frobenius element