# Jordan's Paper on the Jordan Canonical Form

In which paper, did Jordan introduce/prove the Jordan canonical form?

See Hawkins (1977, §5): 2 $$\times$$ 2 case in (1868, pp. 111–113), n $$\times$$ n in Traité des substitutions et des équations algébriques (1870, pp. 114–126). Also Cours d’analyse, vol. 3 (1887, pp. 173–175).