Abstract
Based on the popular Caputo fractional derivative of order β in (0, 1), we define the censored fractional derivative on the positive half-line ℝ+. This derivative proves to be the Feller generator of the censored (or resurrected) decreasing β-stable process in ℝ+. We provide a series representation for the inverse of this censored fractional derivative. We are then able to prove that this censored process hits the boundary in a finite time τ∞, whose expectation is proportional to that of the first passage time of the β-stable subordinator. We also show that the censored relaxation equation is solved by the Laplace transform of τ∞. This relaxation solution proves to be a completely monotone series, with algebraic decay one order faster than its Caputo counterpart, leading, surprisingly, to a new regime of fractional relaxation models. Lastly, we discuss how this work identifies a new sub-diffusion model.
Acknowledgements
The authors thank their institutions for the support, under Grant NSF DMS-2012562, the ARO MURI Grant W911NF-15-1-0562 and the Marsden Fund administered by the Royal Society of New Zealand. The authors also thank Professors Kai Diethelm, Thomas Simon, Zhen-Qing Chen, Krzysztof Bogdan and Zhi Zhou for many helpful discussions.
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© 2021 Diogenes Co., Sofia
Articles in the same Issue
- Frontmatter
- Editorial
- FCAA related news, events and books (FCAA–volume 24–4–2021)
- Research Paper
- Three representations of the fractional p-Laplacian: Semigroup, extension and Balakrishnan formulas
- Tutorial paper
- The bouncing ball and the Grünwald-Letnikov definition of fractional derivative
- Research Paper
- Fractional diffusion-wave equations: Hidden regularity for weak solutions
- Censored stable subordinators and fractional derivatives
- Variational methods to the p-Laplacian type nonlinear fractional order impulsive differential equations with Sturm-Liouville boundary-value problem
- Multivariable fractional-order PID tuning by iterative non-smooth static-dynamic H∞ synthesis
- Filter regularization method for a nonlinear Riesz-Feller space-fractional backward diffusion problem with temporally dependent thermal conductivity
- The rate of convergence on fractional power dissipative operator on compact manifolds
- Fractional Langevin type equations for white noise distributions
- Local existence and non-existence for a fractional reaction–diffusion equation in Lebesgue spaces
- Maximum principles and applications for fractional differential equations with operators involving Mittag-Leffler function
- The Crank-Nicolson type compact difference schemes for a loaded time-fractional Hallaire equation
- Robust fractional-order perfect control for non-full rank plants described in the Grünwald-Letnikov IMC framework
- Properties of the set of admissible “state control” pair for a class of fractional semilinear evolution control systems
Articles in the same Issue
- Frontmatter
- Editorial
- FCAA related news, events and books (FCAA–volume 24–4–2021)
- Research Paper
- Three representations of the fractional p-Laplacian: Semigroup, extension and Balakrishnan formulas
- Tutorial paper
- The bouncing ball and the Grünwald-Letnikov definition of fractional derivative
- Research Paper
- Fractional diffusion-wave equations: Hidden regularity for weak solutions
- Censored stable subordinators and fractional derivatives
- Variational methods to the p-Laplacian type nonlinear fractional order impulsive differential equations with Sturm-Liouville boundary-value problem
- Multivariable fractional-order PID tuning by iterative non-smooth static-dynamic H∞ synthesis
- Filter regularization method for a nonlinear Riesz-Feller space-fractional backward diffusion problem with temporally dependent thermal conductivity
- The rate of convergence on fractional power dissipative operator on compact manifolds
- Fractional Langevin type equations for white noise distributions
- Local existence and non-existence for a fractional reaction–diffusion equation in Lebesgue spaces
- Maximum principles and applications for fractional differential equations with operators involving Mittag-Leffler function
- The Crank-Nicolson type compact difference schemes for a loaded time-fractional Hallaire equation
- Robust fractional-order perfect control for non-full rank plants described in the Grünwald-Letnikov IMC framework
- Properties of the set of admissible “state control” pair for a class of fractional semilinear evolution control systems