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math.RA2018
Cholesky decomposition of positive semidefinite matrices over commutative semirings
David Dolžan, Polona Oblak
We prove that over a commutative semiring every symmetric strongly invertible matrix with nonnegative numerical range has a Cholesky decomposition.
math.RA2018★ 13 cited
The total zero-divisor graph of commutative rings
Alen Đurić, Sara Jevđenić, Polona Oblak +1
In this paper we initiate the study of the total zero-divisor graphs over commutative rings with unity. These graphs are constructed by both relations that arise from the zero-divi…