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Note on right zero divisors in the ring of infinite upper triangular matrices over a field
(2017)
A bidiagonal matrix has only two non-zero diagonals. The matrix is called upper bidiagonal if these are the main diagonal and the principal subdiagonal. In this paper we will describe when infinite upper bidiagonal matrices ...
A new characterization of Suškevič's problem on right zero divisors
(X simpozijum "Matematika i primene", 2019)
The description of right zero divisors in that ring is a very di cult problem that has not been resolved yet. We will prove the following characterization: An infinite upper triangular matrix over a field is a right zero ...