Simion Breaz

activity

20112026

most citedHeaps of modules and affine spaces

16 citations · 26 across the 19 of their papers we have counts for

collaborators

Showing 2013Show all

3 papers · 1 filter

math.AC2013

Nil-clean matrix rings

S. Breaz, G. Călugăreanu, P. Danchev +1

We characterize the nil clean matrix rings over fields. As a by product, it is proved that the full matrix rings with coefficients in commutative nil-clean rings are nil-clean, and…

math.AC2013

Subgroups which admit extensions of homomorphisms

Simion Breaz, Grigore Călugăreanu, Phill Schultz

We classify by numerical invariants the finite subgroups $H$ of a primary abelian group $G$ for which every homomorphism or monomorphism of $H$ into $G$ , or every endomorphism of $…

math.RA2013

$Σ$ -pure injectivity and Brown representability

Simion Breaz

We prove that a right $R$ -module $M$ is $Σ$ -pure injective if and only if $Add (M) \subseteq Prod (M)$ . Consequently, if $R$ is a unital ring, the homotopy category…

Nil-clean matrix rings

Subgroups which admit extensions of homomorphisms

Σ-pure injectivity and Brown representability

$Σ$ -pure injectivity and Brown representability