Fc. Silva, ON A CONJECTURE ABOUT THE JORDAN FORM OF COMPLETIONS OF PARTIAL UPPER-TRIANGULAR MATRICES, Linear algebra and its applications, 260, 1997, pp. 319-321
We give a counterexample to a conjecture about the possible Jordan nor
mal forms of nilpotent matrices where the entries in the upper triangu
lar part are prescribed. (C) Elsevier Science Inc., 1997.