Abstract
Let R be any ring. We prove that every right R-module is coretractable if and only if R is right perfect and every right R-module is small coretractable if and only if all torsion theories on R are cohereditary. We also study mono-coretractable modules. We show that coretractable modules are a proper generalization of mono-coretractable modules.
Citation
Derya KESKİN TÜTÜNCÜ. Berke KALEBO~GAZ. "On coretractable modules." Hokkaido Math. J. 44 (1) 91 - 99, February 2015. https://doi.org/10.14492/hokmj/1470052355
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