title: Characterization of the existence of an N0-completion of a partial N0-matrix with an associated directed cycle.
abstract: An n × n matrix is called an N 0-matrix if all its specified principal minors are nonpositive. In the context of partial matrices, a partial matrix is called a partial N 0-matrix if all its specified principal minors are nonpositive. In this paper we characterize the existence of an N 0-matrix completion of a partial N 0-matrix whose associated graph is a directed cycle.
authors.affiliation: Instituto de Matemáticas Multidisciplinar, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain.
authors.forename: Cristina
authors.initials: C
authors.lastname: Jordán
authors.affiliation: Instituto de Matemáticas Multidisciplinar, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain.
authors.forename: Juan R
authors.identifier: 0000-0002-9893-0761
authors.initials: JR
authors.lastname: Torregrosa
mesh_terms: D008962:Models, Theoretical