Department of Mathematics, Hamedan Branch, Islamic Azad University, Hamedan, Iran


It is proved that applying sufficient regularity conditions to the interval matrix $[A-|B|,A + |B|]$, we can create a new unique solvability condition for the absolute value equation $Ax + B|x|=b$, since regularity of interval matrices implies unique solvability of their corresponding absolute value equation. This condition is formulated in terms of positive de niteness of a certain point matrix. Special case $B=-I$ is veri ed too as an application.


Main Subjects

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