Irfan Soydan

Dr. Irfan Soydan

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Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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16 June 2021 in Carpathian Mathematical Publications
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ISIrfan Soydan
Irfan Soydan
ETERGÜL TÜRKMEN
ERGÜL TÜRKMEN
We introduce the concept of (strongly) $ss$-radical supplemented modules. We prove that if a submodule $N$ of $M$ is strongly $ss$-radical supplemented and $Rad(M/N)=M/N$, then $M$ is strongly $ss$-radical supplemented. For a left good ring $R$, we show that $Rad(R)\subseteq Soc(_{R}R)$ if and only if every left $R$-module is $ss$-radical supplemented. We characterize the rings over which all modules are strongly $ss$-radical supplemented. We also prove that over a left $WV$-ring every supplemented module is $ss$-supplemented.

28 March 2025 in Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi
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ISIrfan Soydan
Irfan Soydan
ETERGÜL TÜRKMEN
ERGÜL TÜRKMEN
In this manuscript, we introduce and study co-coatomically ps-supplemented modules. On condition that each co-coatomic submodule of an T-module A has a ps-supplement within A, then A is termed co-coatomically ps-supplemented. Each radical module is co-coatomically ps-supplemented module. On condition that each left T-module is PS-coinjective, then each left T-module is co-coatomically ps-supplemented. We show that on condition that A is semilocal and Rad(A)≪A, for A, being a cocoatomically ps-supplemented module is equivalent to being ps-supplemented. If A is co-coatomically ps-supplemented T-module, at that case the module A/(〖Soc〗_P (A) ) has each of its coatomic submodules as direct summands. Assuming T to be a left SI-ring with an essential socle, it implies that each left T-module is co-coatomically ps-supplemented.

3 October 2025 in Symmetry
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ISIrfan Soydan
Irfan Soydan
ETERGÜL TÜRKMEN
ERGÜL TÜRKMEN
Hashem BordbarHashem Bordbar
Hashem Bordbar
In this work, we introduce ps-supplement submodules as a kind of supplements. Specifically, a submodule V of a module M is referred to as a ps-supplement if there exists another submodule U⊆M such that M=U+V and the intersection U∩V is projective semisimple. We demonstrate that, over an arbitrary ring, the collection PS of short exact sequences of the form 0⟶M⟶ψN⟶ϕK⟶0, where Im(ψ) is a ps-supplement in N, constitutes a proper class. In addition, we explore several homological aspects of this class, including the symmetry of the relations between the modules. Finally, we provide that a ring R is a left SI-ring with essential socle if and only if every left R-module is ps-supplemented.