Yongduo Wang

activity

20102026

most citedCharacterizations of I-semiregular and I-semiperfect rings

1 citations · 3 across the 9 of their papers we have counts for

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4 papers · 1 filter

math.RA2011★ 1 cited

A generalization of supplemented modules

Yongduo Wang

Let $M$ be a left module over a ring $R$ and $I$ an ideal of $R$ . $M$ is called an $I$ -supplemented module (finitely $I$ -supplemented module) if for every submodule (finitely gener…

math.RA2011★ 1 cited

Characterizations of I-semiregular and I-semiperfect rings

Yongduo Wang

Let $M$ be a left module over a ring $R$ and $I$ an ideal of $R$ . We call $(P, f)$ a (locally)projective $I$ -cover of $M$ if $f$ is an epimorphism from $P$ to $M$ , $P$ is (locally)…

math.RA2010

When an $S$ -closed submodule is a direct summand

Yongduo Wang, Dejun Wu

It is well known that a direct sum of CLS-modules is not, in general, a CLS-module. It is proved that if $M = M_{1} \oplus M_{2}$ , where $M_{1}$ and $M_{2}$ are CLS-modules such that $M_{1}$ an…

math.RA2010★ 1 cited

On a question of Mohamed and Müller

Yongduo Wang, Dejun Wu

A module $M$ is called H-supplemented if for every submodule $A$ of $M$ there is a direct summand $A^{'}$ of $M$ such that $A + X = M$ holds if and only if $A^{'} + X = M$ for any submodule $X$ …

A generalization of supplemented modules

Characterizations of I-semiregular and I-semiperfect rings

When an S-closed submodule is a direct summand

On a question of Mohamed and Müller

When an $S$ -closed submodule is a direct summand