Results 31 to 40 of about 839 (76)
DEPENDENCE LOGIC IN PREGEOMETRIES ANDω-STABLE THEORIES [PDF]
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
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On model theory of covers of algebraically closed fields
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
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Quantum metric spaces as a model for pregeometry [PDF]
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
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On closure operators of Jonsson sets
The work is related to the study of the model-theoretic properties of Jonsson theories, which, generally speaking, are not complete. In the article, on the Boolean of Jonsson subsets of the semantic model of some fixed Jonsson theory, the concept of the
Olga Ulbrikht
doaj +1 more source
Local and Global Properties of the World [PDF]
The essence of the method of physics is inseparably connected with the problem of interplay between local and global properties of the universe. In the present paper we discuss this interplay as it is present in three major departments of contemporary ...
Demaret, Jacques +2 more
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Various Actions for Pregeometry [PDF]
Various actions for pregeometry are presented and compared. The «space-field identity» which equates the n-beins to the derivatives of fundamental scalars is derived from a simple action but seems to be too restrictive to be ...
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Supersimple ω-categorical theories and pregeometries
23 ...
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Membrane pregeometry and the vanishing of the cosmological constant [PDF]
We suggest a model of induced gravity in which the fundamental object is a relativistic {\it membrane} minimally coupled to a background metric and to an external three index gauge potential. We compute the low energy limit of the two-loop effective action as a power expansion in the surface tension.
A. Aurilia +2 more
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Natural models of theories of green points [PDF]
We explicitly present expansions of the complex field which are models of the theories of green points in the multiplicative group case and in the case of an elliptic curve without complex multiplication defined over $\mathbb{R}$.
Boris Zilber, Caycedo, Juan Diego
core
Horizon thermodynamics in pregeometry
The discovery of the various thermodynamical aspects of classical gravity has led to a picture in which Einstein equations might be seen as an equation of state, relating the dynamics of null hypersurfaces to thermodynamic relations for a system at or close to equilibrium.
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