Let R be a ring. A left R-module M (resp., right R-module N) is called weak injective (resp.,
weak flat) if (resp.,) for every super finitely presented left R-module F. By replacing finitely …

ON N-COHERENT RINGS, N-HEREDITARY RINGS AND N-REGULAR RINGS Page 1 Archive
of SID Bulletin of the Iranian Mathematical Society Vol. 37 No. 4 (2011), pp 251-267. ON …

For a ring R, we prove that all left R-modules have weak injective covers and weak injective
preenvelopes. Then we characterize the right weak injective dimension of modules in terms …

Let R be a ring, and n and d fixed non-negative integers. An R-module M is called (n, d)-
injective if Ext d+ 1 R (P, M)= 0 for any n-presented R-module P. M is said to be (n, d) …

(n,d)-(Ext)- phantom 态射与(n,d)-环* Page 1 第63 卷第1 期 2024 年1 月 Vol. 63 No. 1 Jan.
2024 中山大学学报(自然科学版)(中英文) ACTA SCIENTIARUM NATURALIUM UNIVERSITATIS …

ABSTRACT A module M is called strongly FP-injective if Ext i (P, M)= 0 for any finitely
presented module P and all i≥ 1.(Pre) envelopes and (pre) covers by strongly FP-injective …

Let f: A→ B be a ring homomorphism and let J be an ideal of B. In this paper, we investigate
the transfer of the (n, d)-property from a ring A to his amalgamated algebra A⋈ f J. Our aim is …

ON n-COPRESENTED MODULES AND n-CO-COHERENT RINGS Driss Bennis, Habib Bouzraa
and Abdul-Qawe Kaed 1. Introduction Throughout this Page 1 International Electronic Journal of …

Abstract In (n, d)-ring and n-coherent ring theory, n-presented modules plays an important
role. In this paper, we firstly give some new characterizations of n-presented modules and n …

In this article we introduce and investigate a particular class of n-perfect rings that we call
“strong n-perfect rings.” We are mainly concerned with this class of rings in the context of …