2 papers
math.LO2019
Cohesive Powers of Linear Orders
Rumen Dimitrov, Valentina Harizanov, Andrey Morozov +3
Cohesive powers of computable structures can be viewed as effective ultraproducts over effectively indecomposable sets called cohesive sets. We investigate the isomorphism types of…
math.LO2018
Turing Degrees and Automorphism Groups of Substructure Lattices
Rumen Dimitrov, Valentina Harizanov, Andrey Morozov
The study of automorphisms of computable and other structures connects computability theory with classical group theory. Among the noncomputable countable structures, computably en…