Geodesic
On the Integrality of the Witt Polynomials
Séminaire lotharingien de combinatoire, Tome 28 (1992)

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Let rings denote the category of commutative rings with unity elements. Many functors F from rings to rings have the following property: char A=p implies that char F(A)=p. We construct a functor W G: rings -> rings, given a profinite group G. If G is the cyclic group with p elements, then W C p has the property that if char A=p, then char W C p(A) is different from p. We provide several additional results on properties of this functor, and study the functor for various groups G, in particular for the profinite completion of the infinite cyclic group. 

@article{SLC_1992_28_a2,
     author = {Andreas Dress and Christian Siebeneicher},
     title = {On the {Integrality} of the {Witt} {Polynomials}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {28},
     year = {1992},
     url = {http://geodesic.mathdoc.fr/item/SLC_1992_28_a2/}
}
TY  - JOUR
AU  - Andreas Dress
AU  - Christian Siebeneicher
TI  - On the Integrality of the Witt Polynomials
JO  - Séminaire lotharingien de combinatoire
PY  - 1992
VL  - 28
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SLC_1992_28_a2/
ID  - SLC_1992_28_a2
ER  - 
%0 Journal Article
%A Andreas Dress
%A Christian Siebeneicher
%T On the Integrality of the Witt Polynomials
%J Séminaire lotharingien de combinatoire
%D 1992
%V 28
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SLC_1992_28_a2/
%F SLC_1992_28_a2
Andreas Dress; Christian Siebeneicher. On the Integrality of the Witt Polynomials. Séminaire lotharingien de combinatoire, Tome 28 (1992). http://geodesic.mathdoc.fr/item/SLC_1992_28_a2/