On nonnegative matrices

In the fifth lecture of his 1937 lecture series Potron had introduced a new solution

method for systems of linear equations inspired by the work of Cornelius Lanczos.

In the paper ‘Sur les matrices non négatives’ (Comptes Rendus de l’Académie des

Sciences, 1937, 204: 844-6), introduced by Maurice d’Ocagne at the session of 8

March 1937, he gave a short formal presentation of the new method.