Select All | Select None
Login failed. Please try again.
Forgot your password?
Log in with Facebook
Log in with Google
You can now keep track of new articles from Algebra and Logic on your personalized homepage!
Let be a Δ 1 1 -constructivizable model. If its Scott rank is strictly less than ω 1 CK , then it is proved autostable. But if , then there exists an ordinal α<ω 1 CK for which is not autostable in any degree O (γ+1) for all γ>α. We also consider some problems concerning Δ 1 1...
Every group that is finitely presented in the variety A n of solvable groups. and is universally equivalent to a free group F r ( A n ) in this variety, is embedded in the Cartesian degree of F 2 ( A n ). All subgroups on a set of two generators in that Cartesian degree which are universally...
Independent bases of admissible inference rules are studied; namely, we treat inference rules in pretable modal logics over S4, and in pretable superintuitionistic logics. The Maksimova-Esakia-Meskhi theorem holds that there exist exactly five pretable S4-logics and precisely three pretable...
We prove the quantifier-elimination theorem for so-called primitive connected theories, exemplified by theories of modules. The theorem generalizes the well-known Baur-Monk-Garavaglia theorem on the elimination of quantifiers in the model theory of modules. The definition of a class of primitive...
Σ-definability in hereditarily finite superstructures over algebraic systems is studied. We prove the Σ-definability criterion, which is then used as a basis for establishing the reduction theorem for regular theories and for obtaining a characterization of simple theories. The idea of a...
We construct a two-generated group with the co-recursively enumerable word problem that has no presentation by recursive permutations. This answers Higman’s question and exemplifies a group with the minimal possible number of generators. The previous article (1), in which that question was...
For any natural k ≥ 3 and l ≥ 2, we describe decidability boundaries for two varieties: the variety of all k-nilpotent groups and the variety of all l-solvable groups.
results per page
Save this article to read later. You can see your Read Later on your DeepDyve homepage.
To save an article, log in first, or sign up for a DeepDyve account if you don't already have one.
Sign Up Log In
To subscribe to email alerts, please log in first, or sign up for a DeepDyve account if you don't already have one.
Read and print from thousands of top scholarly journals.
Sign up with Facebook
Sign up with Google
Already have an account? Log in
To get new article updates from a journal on your personalized homepage, please log in first, or sign up for a DeepDyve account if you don't already have one.