Some Properties of Some Special Matrices. Part II
This article provides definitions of idempotent, nilpotent, involutory, self-reversible, similar, and congruent matrices, the trace of a matrix and their main properties.
Several Classes of BCK-algebras and their Properties
In this article the general theory of Commutative BCK-algebras and BCI-algebras and several classes of BCK-algebras are given according to [2].
Some Properties of Line and Column Operations on Matrices
This article describes definitions of elementary operations about matrix and their main properties.
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