Up: TOME 64 (112), no. 1, 2021 Previous: Zoran Stanic, Ambat Vijayakumar:
-ring if each nonunit is the product of a unit and a nilpotent. In this short note, answers are provided in response to
two questions on -rings raised by Calugareanu in [1].
Key Words: Nilpotent, unit, UN-ring, matrix ring.
2010 Mathematics Subject Classification: Primary 16U99; Secondary 16S50.
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