R help - Nov 2012 - Changing the signs in rows or columns in matrices and check the matrices if they are identical

i have this problem with matrices i want to check between two matrices if they
are isomorphic i will give an example for what excactly i want
  1 -1  1                                 -1  1   1
-1   1  -1                                1  -1  -1
  1  1   -1                                1   1  -1
this two matrices are isomorphic beacause if i change the first 2 columns the
matrices are identical

  1   -1  1                             -1    1   -1
 -1    1 -1                               1   -1   1
  1    1  -1                               1   -1   1
this two matrices are isomorphic because if i change the first 2 rows the
matrices  are identical
 1     -1   1                         1    -1   1
-1      1  -1                        -1    1  -1
  1      1  -1                         -1  -1  1 
this two matrices are isomorphic because in the third line if i change the signs
the two matrices are identical
  1   -1   1                      1    1    1
-1     1  -1                     -1   -1  -1
 1     1   -1                       1  -1  -1
this two matrices are isomorphic because in the second column if i change the
signs the two matrices are identical


and all the above together

rA <- apply(BB2[,,1,(j-1)],1,paste,collapse=" ")
    rB <- apply(BB2[,,i,(j-1)],1,paste,collapse=" ")
    cA <- apply(BB2[,,1,(j-1)],2,paste,collapse=" ")
    cB <- apply(BB2[,,i,(j-1)],2,paste,collapse=" ")
    iso <- all(sort(rA) == sort(rB)) | all(sort(cA) == sort(cB))

this is only for  the change or rows and columns but i want to change the signs
too.
	[[alternative HTML version deleted]]