Abstract:
The concept of a 1-quasiresolvent model is introduced, and we institute the interrelationship between quasiresolvent models and 1-quasiresolvent models. Sufficient conditions for a model to be 1-quasiresolvent but not quasiresolvent are specified. And we furnish a description for quasiresolvent Ershov algebras and Abelian $p$-groups.