[Formerly: Publ. I.R.M.A. Strasbourg, 1986, 316/S-13, p. 5-7.]

Viewed as functors from the category of commutative rings to the
category of modules, Schur(*\lambda/\mu*) and
Coschur(*\lambda/\mu*) are universally free functors. These and
other categorical properties become trivial in the present
approach.

The paper has been finally published under the title "Symmetrized skew
determinants" in
*Comm. Algebra* **15** (1987), 1455-1468.