Results 21 to 30 of about 6,490,412 (293)
Can You Hear the Shape of a Market? Geometric Arbitrage and Spectral Theory
Axioms, 2021 Utilizing gauge symmetries, the Geometric Arbitrage Theory reformulates any asset model, allowing for arbitrage by means of a stochastic principal fibre bundle with a connection whose curvature measures the “instantaneous arbitrage capability”.
Simone Farinelli, Hideyuki Takada
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Spontaneous decay of level from spectral theory point of view [PDF]
Opuscula Mathematica, 2021 In quantum field theory it is believed that the spontaneous decay of excited atomic or molecular level is due to the interaction with continuum of field modes.
Eduard Ianovich
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Undecidability of the Spectral Gap
Forum of Mathematics, Pi, 2022 We construct families of translationally invariant, nearest-neighbour Hamiltonians on a 2D square lattice of d-level quantum systems (d constant), for which determining whether the system is gapped or gapless is an undecidable problem.
Toby Cubitt +2 more
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Proceedings of the American Mathematical Society, 1985 We initiate the weak spectrum of a linear operator on L p {L^p}
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Matrix-valued spectral theory applied to various differential operators
, 2022 Liaw, ConstanzeThe theory of finite-rank self-adjoint perturbations allows for the determination of spectral information for otherwise inaccessible classes of operators by using the tools of analytic function theory in the matrix-valued setting. The work
Bush, Michael
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Spectral Theory of Perturbative Decays
International Journal of Theoretical Physics, 1998 In this paper, we propose a complex approach to evaluate a function sum of two noncommuting non Hermitian operators. Then, it is proposed an explicit expansion of the evolution operator in the case of the neutral K-meson system under the influence of an external interaction. Then, the importance of the procedure is pointed out to consider the algebraic
D Cocolicchio, M Viggiano
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A survey of kernel and spectral methods for clustering [PDF]
, 2007 Clustering algorithms are a useful tool to explore data structures and have been employed in many disciplines. The focus of this paper is the partitioning clustering problem with a special interest in two recent approaches: kernel and spectral methods ...
Masulli, F. +11 more
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Combining the Two-Layers PageRank Approach with the APA Centrality in Networks with Data
ISPRS International Journal of Geo-Information, 2018 Identifying the influential nodes in complex networks is a fundamental and practical topic at the moment. In this paper, a new centrality measure for complex networks is proposed based on two contrasting models that have their common origin in the well ...
Taras Agryzkov +3 more
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On the Spectral Theory of Operator Measures
Functional Analysis and Its Applications, 2002 In the first section we provide a solution to the M. G. Krein problem about an inner description of the space $L_2(Σ,H).$ In the second section we introduce the multiplicity function for an operator measure. Making use of the description of the space $L_2(Σ,H)$ we establish the correctness of the definition and give a criterion for a spectral measure ...
Malamud, M. M., Malamud, S. M.
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Spectral and wave function statistics in Quantum digraphs [PDF]
, 2012 This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Spectral and wave function statistics of the quantum directed graph, QdG, are studied.
Megaides, Rodrigo
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