Zobrazeno 1 - 10
of 34
pro vyhledávání: '"de Oliveira, Edmundo Capelas"'
Definitions of fractional derivative of order $\alpha$ ($0 < \alpha \leq 1$) using non-singular kernels have been recently proposed. In this note we show that these definitions cannot be useful in modelling problems with a initial value condition (li
Externí odkaz:
http://arxiv.org/abs/1912.04422
This paper starts from the Fisher-Kolmogorov-Petrovskii-Piskunov equation to model diffusive populations. The main result, according to this model, is that two connected patches in a system do not always contribute to each other. Specifically, insert
Externí odkaz:
http://arxiv.org/abs/1909.10045
We consider a partial differential equation associated with a mathematical model describing the concentration of nutrients in blood which interferes directly on the erythrocyte sedimentation rate in the case of an average fluid velocity equal to zero
Externí odkaz:
http://arxiv.org/abs/1701.07379
In this work we show that it is possible to calculate the fractional integrals and derivatives of order $\alpha$ (using the Riemann-Liouville formulation) of power functions $\left( t-\ast\right) ^{\beta}$ with $\beta$ being any real value, so long a
Externí odkaz:
http://arxiv.org/abs/1612.07240
Publikováno v:
Computational & Applied Mathematics; Feb2025, Vol. 44 Issue 1, p1-14, 14p
Publikováno v:
Phys. Rev. D 86, 128501 (2012)
In this paper we show that the statement in Ahluwalia, Lee, and Schritt (2011) that the existence of elko spinor fields implies in an axis of locality is equivocated. The anticommutator {{\Lambda}(x,t),{\Pi}(x,t} is strictly local.
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Externí odkaz:
http://arxiv.org/abs/1210.7207
In this paper we describe the theory of a device that is able to extract energy from an external magnetic field. The device is a cylindrical magnetic insulator that once put in rotation makes electromagnetic angular momentum to be stored in the elect
Externí odkaz:
http://arxiv.org/abs/1208.1702
Publikováno v:
The European Physical Journal, Special Topics, Vol. 193 (2011), pp. 161-171
We revisit the Mittag-Leffler functions of a real variable $t$, with one, two and three order-parameters $\{\alpha, \beta, \gamma\}$, as far as their Laplace transform pairs and complete monotonicty properties are concerned. These functions, subjecte
Externí odkaz:
http://arxiv.org/abs/1106.1761
We study the tunneling through delta and double delta potentials in fractional quantum mechanics. After solving the fractional Schr\"odinger equation for these potentials, we calculate the corresponding reflection and transmission coefficients. These
Externí odkaz:
http://arxiv.org/abs/1011.1948
Publikováno v:
Int.J.Mod.Phys.D13:1879-1915,2004
In this paper we show how to describe the general theory of a linear metric compatible connection with the theory of Clifford valued differential forms. This is done by realizing that for each spacetime point the Lie algebra of Clifford bivectors is
Externí odkaz:
http://arxiv.org/abs/math-ph/0407025