2 papers
math.RA2021
On unit stable range one matrices
Grigore Calugareanu
We characterize the unit stable range one 2x2 and 3x3 matrices over commutative rings. In particular, we characterize the 2x2 matrices which satisfy the Goodearl-Menal condition. F…
math.RA2019
Strictly invariant submodules
Simion Breaz, Grigore Călugăreanu, Andrey Chekhlov
If is an -module, we study the submodules with the property that is invariant with respect to all monomorphisms . Such submodules are called \t…