AbstractWe give a precise characterization, in terms of parity digraphs, of those square matrices A such that, for every matrix B with the same sign pattern as A, B–1 exists and has the same sign pattern as A–1
AbstractA sign-nonsingular matrix is a square matrix X such that each matrix Y with the same sign pa...
AbstractA sign pattern matrix is a matrix whose entries are from the set {+, −, 0}. For a real matri...
AbstractIf A is an n × n sign pattern matrix, then Q(A) denotes the set of all real n×n matrices B s...
AbstractWe give a precise characterization, in terms of parity digraphs, of those square matrices A ...
summary:By a sign pattern (matrix) we mean an array whose entries are from the set $\lbrace +,-,0\rb...
AbstractIf A is an n × n sign pattern matrix, then Q(A) denotes the set of all real n×n matrices B s...
AbstractA result of Johnson, Leighton, and Robinson characterizing sign patterns of real matrices wi...
A sign pattern (matrix) is a matrix whose entries are from the set {+, -, 0}. We say that a sign pat...
AbstractIn this paper, we modify Eschenbach’s algorithm for constructing sign idempotent sign patter...
An m by n sign pattern S is an m by n matrix with entries in {+,-, 0}. Such a sign pattern allows a ...
summary:By a sign pattern (matrix) we mean an array whose entries are from the set $\lbrace +,-,0\rb...
summary:By a sign pattern (matrix) we mean an array whose entries are from the set $\lbrace +,-,0\rb...
AbstractWe identify the sign patterns which occur among the real, nonsingular, entrywise nonzero mat...
AbstractA result of Johnson, Leighton, and Robinson characterizing sign patterns of real matrices wi...
AbstractWe determine here the +, -,0 sign patterns which occur among the inverses of nonsingular, en...
AbstractA sign-nonsingular matrix is a square matrix X such that each matrix Y with the same sign pa...
AbstractA sign pattern matrix is a matrix whose entries are from the set {+, −, 0}. For a real matri...
AbstractIf A is an n × n sign pattern matrix, then Q(A) denotes the set of all real n×n matrices B s...
AbstractWe give a precise characterization, in terms of parity digraphs, of those square matrices A ...
summary:By a sign pattern (matrix) we mean an array whose entries are from the set $\lbrace +,-,0\rb...
AbstractIf A is an n × n sign pattern matrix, then Q(A) denotes the set of all real n×n matrices B s...
AbstractA result of Johnson, Leighton, and Robinson characterizing sign patterns of real matrices wi...
A sign pattern (matrix) is a matrix whose entries are from the set {+, -, 0}. We say that a sign pat...
AbstractIn this paper, we modify Eschenbach’s algorithm for constructing sign idempotent sign patter...
An m by n sign pattern S is an m by n matrix with entries in {+,-, 0}. Such a sign pattern allows a ...
summary:By a sign pattern (matrix) we mean an array whose entries are from the set $\lbrace +,-,0\rb...
summary:By a sign pattern (matrix) we mean an array whose entries are from the set $\lbrace +,-,0\rb...
AbstractWe identify the sign patterns which occur among the real, nonsingular, entrywise nonzero mat...
AbstractA result of Johnson, Leighton, and Robinson characterizing sign patterns of real matrices wi...
AbstractWe determine here the +, -,0 sign patterns which occur among the inverses of nonsingular, en...
AbstractA sign-nonsingular matrix is a square matrix X such that each matrix Y with the same sign pa...
AbstractA sign pattern matrix is a matrix whose entries are from the set {+, −, 0}. For a real matri...
AbstractIf A is an n × n sign pattern matrix, then Q(A) denotes the set of all real n×n matrices B s...