Geodesic
Co-imaging rings
Matematičeskie zametki, Tome 10 (1971) no. 6, pp. 689-700 
T. S. Tol'skaya. Co-imaging rings. Matematičeskie zametki, Tome 10 (1971) no. 6, pp. 689-700. http://geodesic.mathdoc.fr/item/MZM_1971_10_6_a10/
@article{MZM_1971_10_6_a10,
     author = {T. S. Tol'skaya},
     title = {Co-imaging rings},
     journal = {Matemati\v{c}eskie zametki},
     pages = {689--700},
     year = {1971},
     volume = {10},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1971_10_6_a10/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

A characterization is given of commutative co-imaging rings, using localization, in addition to which it is determined to what extent this property of a ring-of being left co-imagingis retained by rings of endomorphisms of free modules and by group rings.