Zobrazeno 1 - 10
of 5 515
pro vyhledávání: '"A Quittner"'
Autor:
Quittner, Pavol
We consider a priori estimates of possibly sign-changing solutions to superlinear parabolic problems and their applications (blow-up rates, energy blow-up, continuity of blow-up time, existence of nontrivial steady states etc). Our estimates are base
Externí odkaz:
http://arxiv.org/abs/2412.05855
Autor:
Quittner, Pavol, Souplet, Philippe
We establish Liouville type theorems in the whole space and in a half-space for parabolic problems without scale invariance. To this end, we employ two methods, respectively based on the corresponding elliptic Liouville type theorems and energy estim
Externí odkaz:
http://arxiv.org/abs/2409.20049
Autor:
Quittner, Pavol, Souplet, Philippe
We give applications of known and new Liouville type theorems to universal singularity and decay estimates for non scale invariant elliptic problems, including Lane-Emden and Schr\"odinger type systems. This applies to various classes of nonlineariti
Externí odkaz:
http://arxiv.org/abs/2407.04154
Autor:
Quittner, Pavol
This paper deals with necessary and sufficient conditions for weak and strong minimizers of functionals $\Phi(u)=\int_a^b f(x,u(x),u'(x))\,dx$, where $u\in C^1([a,b],{\mathbb R}^N)$. We first derive conditions which are simpler than the known ones, a
Externí odkaz:
http://arxiv.org/abs/2205.08765
Autor:
Pavol Quittner
Publikováno v:
Electronic Journal of Qualitative Theory of Differential Equations, Vol 2024, Iss 11, Pp 1-36 (2024)
This paper deals with necessary and sufficient conditions for weak and strong minimizers of functionals $\Phi(u)=\int_a^b f(x,u(x),u'(x))\,dx$, where $u\in C^1([a,b],{\mathbb R}^N)$. We first derive conditions which are simpler than the known ones, a
Externí odkaz:
https://doaj.org/article/a5d4f8536938408ab908179feaea9054
Autor:
Clara Mukuria, Donna Rowen, Sarah Acaster, Lisa J. McGarry, Yiyue Lou, Patrick R. Sosnay, Alexandra L. Quittner
Publikováno v:
Journal of Patient-Reported Outcomes, Vol 8, Iss 1, Pp 1-13 (2024)
Abstract Objective This study aimed to compare the psychometric performance of the Cystic Fibrosis Questionnaire–Revised–8 Dimensions (CFQ-R-8D), a new, condition-specific, preference-based measure, with that of generic preference-based measures
Externí odkaz:
https://doaj.org/article/ace29207ae584be6835124f87fa97681
Autor:
Armstrong, Daniel, Byrnes, Catherine, Carlin, John, Carzino, Rosemary, Cheney, Joyce, Cooper, Peter, George, Narelle, Grimwood, Keith, Martin, James, McKay, Karen, Moodie, Marj, Robertson, Colin, Tiddens, Harm, Vidmar, Suzanna, Wainwright, Claire, Whitehead, Bruce, Anderson, Vicki, Bourgeat, Pierrick, Davidson, Andrew, Gailer, Nicholas, Grayson-Collins, Jasmin, Salvado, Olivier, Quittner, Alexandra, Wainwright, Claire Elizabeth *, Carlin, John Brooke, Zannino, Diana, Armstrong, Floyd Daniel
Publikováno v:
In The Lancet Respiratory Medicine September 2024 12(9):703-713
Autor:
Quittner, Pavol
Liouville theorems for scaling invariant nonlinear elliptic systems (saying that the system does not possess nontrivial entire solutions) guarantee a priori estimates of solutions of related, more general systems. Assume that $p=2q+3>1$ is Sobolev su
Externí odkaz:
http://arxiv.org/abs/2108.13727
Autor:
Quittner, Pavol
Liouville theorems for scaling invariant nonlinear parabolic equations and systems (saying that the equation or system does not possess nontrivial entire solutions) guarantee optimal universal estimates of solutions of related initial and initial-bou
Externí odkaz:
http://arxiv.org/abs/2108.13723
Autor:
Graziano, Sonia, Boldrini, Francesca, Pellicano, Gaia Romana, Milo, Francesco, Majo, Fabio, Cristiani, Luca, Montemitro, Enza, Alghisi, Federico, Bella, Sergio, Cutrera, Renato, Fiocchi, Alessandro Giovanni, Quittner, Alexandra, Tabarini, Paola
Publikováno v:
In Chest April 2024 165(4):800-809