A matrix derivation of a well-known representation theorem for (tr Ap)1/p is given, which is the solution of a restricted maximization problem. The paper further gives a solution of the corresponding restricted minimization problem.
@article{urn:eudml:doc:40152, title = {A matrix derivation of a representation theorem for (tr Ap)1/p.}, journal = {Q\"uestii\'o}, volume = {13}, year = {1989}, pages = {75-79}, mrnumber = {MR1093612}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:40152} }
Neudecker, Heinz. A matrix derivation of a representation theorem for (tr Ap)1/p.. Qüestiió, Tome 13 (1989) pp. 75-79. http://gdmltest.u-ga.fr/item/urn:eudml:doc:40152/