%0 Journal Article %A Fares, Ali %A Ayad, Ali %T Solvability of infinite differential systems of the form \(x' (t) =Tx(t)+b\) where \(T\) is either of the triangles \(C(\lambda)\) or \(\overline{N}_ q\) %J Journal of nonlinear sciences and its applications %D 2012 %P 448-458 %V 5 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.22436/jnsa.005.06.05/ %R 10.22436/jnsa.005.06.05 %G en %F JNSA_2012_5_6_a4