  We prove that over an algebraically closed field there is a representation
embedding from the category of classical Kronecker-modules without the simple
injective into the category of finite-dimensional modules over any
representation-infinite finite-dimensional algebra. We also sharpen some known
results on representation embeddings, we simplify some proofs and we construct
a simultaneous orthogonal embedding for an infinite family of module
categories. In the last section the minimal classes of representation-infinite
algebras are determined. The result depends on the characteristic.
