Geodesic
The Fixed Subring of Some Groups of Ring Automorphisms
Canadian mathematical bulletin, Tome 27 (1984) no. 1, pp. 113-116

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Let Zm denote the ring of integers modulo an integer m > 1 and let G(Zm) be the group under composition of all Zm-automorphisms of Zm[X]. In this paper we determine Zm[X]G(zm) the subring of Zm[X] left fixed by elements of G(Zm).
DOI : 10.4153/CMB-1984-016-8
Mots-clés : kw, 13B10 
Dowlen, Mary. The Fixed Subring of Some Groups of Ring Automorphisms. Canadian mathematical bulletin, Tome 27 (1984) no. 1, pp. 113-116. doi: 10.4153/CMB-1984-016-8
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     author = {Dowlen, Mary},
     title = {The {Fixed} {Subring} of {Some} {Groups} of {Ring} {Automorphisms}},
     journal = {Canadian mathematical bulletin},
     pages = {113--116},
     year = {1984},
     volume = {27},
     number = {1},
     doi = {10.4153/CMB-1984-016-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1984-016-8/}
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