Results 21 to 30 of about 859 (81)

On Quasiminimal Excellent Classes [PDF]

open access: yes, 2007
A careful exposition of Zilber's quasiminimal excellent classes and their categoricity is given, leading to two new results: the L_w1,w(Q)-definability assumption may be dropped, and each class is determined by its model of dimension aleph_0.Comment: 16 ...
Baldwin, Jonathan Kirby, Marker
core   +2 more sources

Independence Logic and Abstract Independence Relations [PDF]

open access: yes, 2015
We continue the work on the relations between independence logic and the model-theoretic analysis of independence, generalizing the results of [15] and [16] to the framework of abstract independence relations for an arbitrary AEC.
Adler   +18 more
core   +1 more source

Induced gravity and gauge interactions revisited [PDF]

open access: yes, 2009
It has been shown that the primary, old-fashioned idea of Sakharov's induced gravity and gauge interactions, in the "one-loop dominance" version, works astonishingly well yielding phenomenologically reasonable results.
Akama   +33 more
core   +2 more sources

Heritability of Types of Pregeometry with Respect to Compositions of Structures

open access: yesИзвестия Иркутского государственного университета: Серия "Математика"
In this paper, we investigate how the pregeometry arising from the composition of two predicate signature structures inherits the types of pregeometries of the original stuctures.
S. B. Malyshev
doaj   +1 more source

Simple structures axiomatized by almost sure theories

open access: yes, 2015
In this article we give a classification of the binary, simple, $\omega$-categorical structures with SU-rank 1 and trivial pregeometry. This is done both by showing that they satisfy certain extension properties, but also by noting that they may be ...
Ahlman, Ove
core   +1 more source

DEPENDENCE LOGIC IN PREGEOMETRIES ANDω-STABLE THEORIES [PDF]

open access: yesThe Journal of Symbolic Logic, 2016
AbstractWe present a framework for studying the concept of independence in a general context covering database theory, algebra and model theory as special cases. We show that well-known axioms and rules of independence for making inferences concerning basic atomic independence statements are complete with respect to a variety of semantics.
PAOLINI, GIANLUCA, VÄÄNÄNEN, JOUKO
openaire   +5 more sources

The geometry of Hrushovski constructions, I. The uncollapsed case

open access: yes, 2011
An intermediate stage in Hrushovski's construction of flat strongly minimal structures in a relational language L produces omega-stable structures of rank omega.
Baldwin   +8 more
core   +1 more source

Quantum metric spaces as a model for pregeometry [PDF]

open access: yesPhysical Review D, 1992
A new arena for the dynamics of spacetime is proposed, in which the basic quantum variable is the two-point distance on a metric space. The scaling dimension (that is, the Kolmogorov capacity) in the neighborhood of each point then defines in a natural way a local concept of dimension.
Alvarez Lacalle, Enrique   +2 more
openaire   +3 more sources

On model theory of covers of algebraically closed fields

open access: yes, 2015
We study covers of the multiplicative group of an algebraically closed field as quasiminimal pregeometry structures and prove that they satisfy the axioms for Zariski-like structures presented in \cite{lisuriart}, section 4.
Hyttinen, Tapani, Kangas, Kaisa
core   +1 more source

Heritability of types of a pregeometry relative to a family of relational structures

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы
A series of geometrical and topological properties induced by structures, including degeneration, modularity, local modularity, projectivity, local finiteness, etc., play an important role in clarifying structural relationships and in classifying basic ...
S.B. Malyshev, S.V. Sudoplatov
doaj   +1 more source

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