Results 11 to 20 of about 859 (81)
Categoricity in Quasiminimal Pregeometry Classes [PDF]
The Journal of Symbolic Logic, 2014 Quasiminimal pregeometry classes were introduces by Zilber [2005a] to isolate the model theoretical core of several interesting examples. He proves that a quasiminimal pregeometry class satisfying an additional axiom, called excellence, is categorical in
Haykazyan, Levon
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Algebraic Quantum Mechanics and Pregeometry [PDF]
AIP Conference Proceedings, 2006 We discuss the relation between the q-number approach to quantum mechanics suggested by Dirac and the notion of "pregeometry" introduced by Wheeler. By associating the q-numbers with the elements of an algebra and regarding the primitive idempotents as ...
Bohm, D., Davies, Philip, Hiley, B.
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Geometry, pregeometry and beyond [PDF]
Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics, 2006 This article explores the overall geometric manner in which human beings make sense of the world around them by means of their physical theories; in particular, in what are nowadays called pregeometric pictures of Nature.
Anandan +26 more
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Basic and degenerate pregeometries [PDF]
European Journal of Combinatorics, 2010 We study pairs $(\Gamma,G)$, where $\Gamma$ is a 'Buekenhout-Tits' pregeometry with all rank 2 truncations connected, and $G\leqslant\mathrm{Aut} \Gamma$ is transitive on the set of elements of each type.
Cai Heng Li +4 more
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Random l-colourable structures with a pregeometry [PDF]
Mathematical Logic Quarterly, 2012 We study finite $l$-colourable structures with an underlying pregeometry. The probability measure that is used corresponds to a process of generating such structures (with a given underlying pregeometry) by which colours are first randomly assigned to ...
Ebbinghaus H.‐D. +4 more
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Finite-temperature scalar pregeometry [PDF]
Il Nuovo Cimento A, 1983 We study the temperature corrections to the induced Newton constant. We obtain the Einstein action from an effective action of matter at finite temperature by means of the heat kernel expansion method. We find that the induced gravitational constant decreases as the temperature becomes higher.
G. Denardo, E. Spallucci
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Topological pregauge-pregeometry
Physics Letters B, 1991 Abstract The pregauge-pregeometric action, i.e. the fundamental matter action whose quantum fluctuations give rise to the Einstein-Hilbert and the Yang-Mills actions, is investigated from the point of view of the topological field theory. We show that the scalar pregauge-pregeometric action is a topological invariant for appropriate choices of the ...
Keiichi Akama, Ichiro Oda
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Central types of convex fragments of the perfect Jonsson theory
Қарағанды университетінің хабаршысы. Математика сериясы, 2019 In this paper, the central types of convex fragments of the perfect Jonsson theory are considered. The main goal of this paper is to redefine the A.D.
A.R. Yeshkeyev, M.T. Omarova
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Waves on Noncommutative Spacetime and Gamma-Ray Bursts [PDF]
, 1999 Quantum group Fourier transform methods are applied to the study of processes on noncommutative Minkowski spacetime $[x^i,t]=\imath\lambda x^i$. A natural wave equation is derived and the associated phenomena of {\it in vacuo} dispersion are discussed ...
Amelino-Camelia G. +9 more
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Small models of hybrids for special subclasses of Jonsson theories
Қарағанды университетінің хабаршысы. Математика сериясы, 2019 This article presents the result related to the model - theoretic properties of special subsets of the semantic model of some fixed Jonsson theory. The specialty of these sets is due to their definability and closure.
A.R. Yeshkeyev, N.M. Mussina
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