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- Rutgers, The State University of New JerseyUS20 papers
- Centre National de la Recherche ScientifiqueFR17 papers
- Tel Aviv UniversityIL17 papers
- California Institute of TechnologyUS16 papers
- University of ChicagoUS16 papers
- Bar-Ilan UniversityIL15 papers
- Weizmann Institute of ScienceIL15 papers
- University of WashingtonUS14 papers
- Technion – Israel Institute of TechnologyIL12 papers
- University of ArizonaUS11 papers
- Hungarian Academy of SciencesHU10 papers
- Physico-Technical InstituteRU10 papers
41 papers · 1 filter
Algebraic logic and logically-geometric types in varieties of algebras
Boris Plotkin, Elena Aladova, Eugene Plotkin
The main objective of this paper is to show that the notion of type which was developed within the frames of logic and model theory has deep ties with geometric properties of algeb…
On central extensions and definably compact groups in o-minimal structures
Ehud Hrushovski, Ya'acov Peterzil, Anand Pillay
We prove several structural results on definably compact groups G in o-minimal expansions of real closed fields, such as (i) G is definably an almost direct product of a semisimple…
Successors of Singular Cardinals and Coloring Theorems II
Todd Eisworth, Saharon Shelah
We investigate negative square-brackets partition relations at successors of singular cardinals of countable cofinality. Along the way we prove some club-guessing results.
Absolutely Indecomposable Modules
Rüdiger Göbel, Saharon Shelah
A module is called absolutely indecomposable if it is directly indecomposable in every generic extension of the universe. We want to show the existence of large abelian groups that…
More on Tie-points and homeomorphism in N^*
Alan Dow, Saharon Shelah
A point x is a (bow) tie-point of a space X if X setminus {x} can be partitioned into (relatively) clopen sets each with x in its closure. Tie-points have appeared in the construct…
Difference fields and descent in algebraic dynamics - I
Zoé Chatzidakis, Ehud Hrushovski
We draw a connection between the model-theoretic notions of modularity (or one-basedness), orthogonality and internality, as applied to difference fields, and questions of descent…