Results 41 to 50 of about 839 (76)
Pregeometry over locally o‐minimal structures and dimension
Mathematical Logic Quarterly, 2023 AbstractWe define a discrete closure operator for definably complete locally o‐minimal structures . The pair of the underlying set of and the discrete closure operator forms a pregeometry. We define the rank of a definable set over a set of parameters using this fact and call it ‐dimension.
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, 2010 Just like the vector gauge bosons in the gauge theories, it is now known that gravitons acquire mass in the process of spontaneous symmetry breaking of diffeomorphisms through the condensation of scalar fields.
ICHIRO ODA +3 more
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An example of the stochastic dynamics of a causal set
, 2011 An example of a discrete pregeometry on a microscopic scale is introduced. The model is a directed dyadic acyclic graph. This is the particular case of a causal set. The particles in this model must be self-organized repetitive structures.
Krugly, Alexey L., Stepanian, Ivan V.
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Spinor Pregeometry at Finite Tempereture [PDF]
Progress of Theoretical Physics, 1987 We derive the effective action for gravity at finite temperature in spinor pregeometry. The temperature-dependent effective potential for the vierbein which is parametrized as ekp = b diag (1, p, p, p) has the minimum at b=O for fixed p, and behaves asp3 for fixed b. These results indicate that the system of fundamental matters in spinor pregeometry is
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, 2020 We examine the first order structure of pregeometries of structures built via Hrushovski constructions. In particular, we show that the class of flat pregeometries is an amalgamation class such that the pregeometry of the unbounded arity Hrushovski construction is precisely its generic.
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Pregeometry and an Extended String Action [PDF]
Progress of Theoretical Physics, 1988 On propose une action de couche d'univers pour une corde transversalement etendue. C'est celle d'une theorie gravitationnelle et de jauge avec des champs de matiere sur la couche d'univers, avec des effets additionnels de la seconde quantite ...
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Corrosion Mitigation Performance of N80 Steel in 5% Sulfamic Acid Medium by Applying Novel Tetrahydro-1,2,4-triazines Including Triazene Moieties: Electrochemical and Theoretical Approaches. [PDF]
ACS Omega, 2022 Abd El-Lateef HM +3 more
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An Attempt at Pregeometry: -- Gravity with Composite Metric -- [PDF]
Progress of Theoretical Physics, 1978 Summary: According to fundamental postulates and the principle of relativity, we derive the basic determinant Lagrangian of `pregeometry', from which geometrodynamics, or Einstein's gravity, is derived. The metric and, therefore, the space-time distance itself appear as composites of lepton-antilepton and quarkantiquark pairs.
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Efficient Synthesis of 6,7-Dihydro-5H-cyclopenta[b]pyridine-3-carbonitrile Compounds and Their Applicability As Inhibitor Films for Steel Alloy Corrosion: Collective Computational and Practical Approaches. [PDF]
ACS Omega, 2022 Abd El-Lateef HM +3 more
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Ranks and pregeometries in finite diagrams
Annals of Pure and Applied Logic, 2000 Abstract: "The study of classes of models of a finite diagram was initiated by S. Shelah in 1969. A diagram D is a set of types over the empty set, and the class of models of the diagram D consists of the models of T which omit all the types not in D.
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