A factorable matrix is a natural generalization of a Riesz matrix. When considering the properties of factorable matrices, many authors have used methods similar to the methods for Riesz matrices. So, a property having a long proof for Riesz matrices generated a long proof for a factorable matrix. In this paper for any factorable matrix we introduced its associated Riesz matrix. With its help many properties of a factorable matrix can be easily and briefly deduced from the corresponding properties of the associated Riesz matrix.
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