A polynomial solution to regulation and tracking. II. Stochastic problem
A way of Reducing the Factorization Problem in Z[x] to the Factorization Problem in Z
Abelian varieties and a conjecture of R.M. Robinson.
An application of the Gelfand-Mazur theorem: the fundamental theorem of algebra revisited.
An inequality on the greates roots of a polynomial.
Assigning the invariant factors by feedback