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Combinations of structures
2018
Известия Иркутского государственного университета: Серия "Математика"
Иркутского государственного университета УДК 510.67 MSC 03C30, 03C15, 03C50 Abstract. We investigate combinations of structures by families of structures relative to families of unary predicates and equivalence relations. Conditions preserving ω-categoricity and Ehrenfeuchtness under these combinations are characterized. The notions of e-spectra are introduced and possibilities for e-spectra are described. It is shown that ω-categoricity for disjoint P -combinations means that there are
doi:10.26516/1997-7670.2018.24.82
fatcat:uoam6x74affg5alxi3zwmtvw6u