Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Dale, Roberto"'
Publikováno v:
Solitons & Fractals, 178, 114305 (2024)
The objective of this paper is the construction of new indicators that can be useful to operate in the cryptocurrency market. These indicators are based on public data obtained from the blockchain network, specifically from the nodes that make up Bit
Externí odkaz:
http://arxiv.org/abs/2403.00770
Publikováno v:
Chaos 32 (featured article), 112101 (2022)
This is a review of group entropy and its application to permutation complexity. Specifically we revisit a new approach to the notion of complexity in time serie analysis, based on both permutation entropy and group entropy. As a result, the permutat
Externí odkaz:
http://arxiv.org/abs/2401.11340
Relativistic field theory for a vector field on a curved space-time is considered assuming that the Lagrangian field density is quadratic and contains field derivatives of first order at most. By applying standard variational calculus, the general Eu
Externí odkaz:
http://arxiv.org/abs/2308.11795
Publikováno v:
Phys. Rev. D 107, 023506 (2023)
The temperature measurements, $T$, of the perturbed cosmic microwave background, performed by the cosmic background explorer satellite (COBE), are considered. A dichotomist function, $f = \pm 1$, is defined such that $f =+1$ if $\delta T > 0$ and $f
Externí odkaz:
http://arxiv.org/abs/2302.05125
For a single fermionic field, an interpretation of the Fierz identities (which establish relations between the bilinear field observables) is given. They appear closely related to the algebraic class (regular or singular) of the spin 2-form $S$ assoc
Externí odkaz:
http://arxiv.org/abs/2206.00639
Publikováno v:
Chaos 31, 013115 (2021)
Permutation entropy measures the complexity of deterministic time series via a data symbolic quantization consisting of rank vectors called ordinal patterns or just permutations. The reasons for the increasing popularity of this entropy in time serie
Externí odkaz:
http://arxiv.org/abs/2003.13728
Publikováno v:
In Communications in Nonlinear Science and Numerical Simulation February 2022 105
Autor:
Dale, Roberto, Sáez, Diego
The vector-tensor (VT) theory of gravitation revisited in this article was studied in previous papers, where it was proved that VT works and deserves attention. New observational data and numerical codes have motivated further development which is pr
Externí odkaz:
http://arxiv.org/abs/1610.08872
Publikováno v:
Astrophys. Space Sci (2015) 357:116
A certain vector-tensor (VT) theory of gravitation was tested in previous papers. In the background universe, the vector field of the theory has a certain energy density, which is appropriate to play the role of vacuum energy (cosmological constant).
Externí odkaz:
http://arxiv.org/abs/1509.04162
Autor:
Dale, Roberto, Sáez, Diego
Publikováno v:
Physical Review D (2014)
We study relevant cosmological topics in the framework of a certain vector-tensor theory of gravitation (hereafter VT). This theory is first compared with the so-called extended electromagnetism (EE). These theories have a notable resemblance and bot
Externí odkaz:
http://arxiv.org/abs/1404.0631