A class of local classical solutions for the one-dimensional Perona-Malik equation
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- by Marina Ghisi and Massimo Gobbino PDF
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Abstract:
We consider the Cauchy problem for the one-dimensional Perona-Malik equation \[ u_{t}=\frac {1-u_{x}^{2}}{(1+u_{x}^{2})^{2}} u_{xx}\] in the interval $[-1,1]$, with homogeneous Neumann boundary conditions.
We prove that the set of initial data for which this equation has a local-in-time classical solution $u:[-1,1]\times [0,T]\to \mathbb {R}$ is dense in $C^{1}([-1,1])$. Here “classical solution” means that $u$, $u_{t}$, $u_{x}$ and $u_{xx}$ are continuous functions in $[-1,1]\times [0,T]$.
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Additional Information
- Marina Ghisi
- Affiliation: Dipartimento di Matematica “Leonida Tonelli”, Università degli Studi di Pisa, Largo Bruno Pontecorvo 5, 56127 Pisa, Italy
- Email: ghisi@dm.unipi.it
- Massimo Gobbino
- Affiliation: Dipartimento di Matematica Applicata “Ulisse Dini”, Università degli Studi di Pisa, Via Filippo Buonarroti 1c, 56127 Pisa, Italy
- Email: m.gobbino@dma.unipi.it
- Received by editor(s): November 13, 2006
- Received by editor(s) in revised form: October 25, 2007
- Published electronically: June 17, 2009
- © Copyright 2009
American Mathematical Society
The copyright for this article reverts to public domain 28 years after publication. - Journal: Trans. Amer. Math. Soc. 361 (2009), 6429-6446
- MSC (2000): Primary 35A07, 35B65, 35K65
- DOI: https://doi.org/10.1090/S0002-9947-09-04793-X
- MathSciNet review: 2538599