Abstract:
A real
matrix is said to be
–
matrix if its principal minors are non
-
negative and all its non
-
diagonal entries are non
-
positive. In this project, we
consider the
–
matrix completion problem. It is shown that any digraph with
less than four directe
d lines which is not a cycle has
–
completion. It is
further shown that digraph of
matrix with less than four directed lines
which is a cycle does not have
–
completion.