Per una categoria vengono introdotti gli analoghi dei concetti di "model-companion" e "model-completion" dovuti al Robinson, ottenendo poi varie conseguenze ed applicazioni ad essi relative.
@article{RLINA_1975_8_59_6_627_0, author = {George Georgescu and Iona Petrescu}, title = {Model-completion in categories}, journal = {Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti}, volume = {59}, year = {1975}, pages = {627-634}, zbl = {0357.02052}, mrnumber = {0505451}, language = {en}, url = {http://dml.mathdoc.fr/item/RLINA_1975_8_59_6_627_0} }
Georgescu, George; Petrescu, Iona. Model-completion in categories. Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti, Tome 59 (1975) pp. 627-634. http://gdmltest.u-ga.fr/item/RLINA_1975_8_59_6_627_0/
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