# American Institute of Mathematical Sciences

2012, 32(6): 2079-2088. doi: 10.3934/dcds.2012.32.2079

## A minimal approach to the theory of global attractors

 1 Institute for Information Transmission Problems, Russian Academy of Sciences, Bolshoy Karetniy 19, Moscow 101447, Russian Federation 2 Dipartimento di Matematica “Francesco Brioschi”, Politecnico di Milano, Via Bonardi 9, Milano 20133, Italy, Italy

Received  March 2011 Revised  June 2011 Published  February 2012

For a semigroup $S(t):X\to X$ acting on a metric space $(X,d)$, we give a notion of global attractor based only on the minimality with respect to the attraction property. Such an attractor is shown to be invariant whenever $S(t)$ is asymptotically closed. As a byproduct, we generalize earlier results on the existence of global attractors in the classical sense.
Citation: Vladimir V. Chepyzhov, Monica Conti, Vittorino Pata. A minimal approach to the theory of global attractors. Discrete & Continuous Dynamical Systems - A, 2012, 32 (6) : 2079-2088. doi: 10.3934/dcds.2012.32.2079
##### References:
 [1] A. V. Babin and M. I. Vishik, "Attractors of Evolution Equations,", Studies in Mathematics and its Applications, 25 (1992). [2] V. V. Chepyzhov and M. I. Vishik, "Attractors for Equations of Mathematical Physics,'', American Mathematical Society Colloquium Publications, 49 (2002). [3] J. K. Hale, "Asymptotic Behavior of Dissipative Systems,", Mathematical Surveys and Monographs, 25 (1988). [4] A. Haraux, "Systèmes Dynamiques Dissipatifs et Applications,", Recherches en Mathématiques Appliquées, 17 (1991). [5] A. Miranville and S. Zelik, Attractors for dissipative partial differential equations in bounded and unbounded domains,, in, (2008), 103. [6] V. Pata and S. Zelik, A result on the existence of global attractors for semigroups of closed operators,, Commun. Pure Appl. Anal., 6 (2007), 481. doi: 10.3934/cpaa.2007.6.481. [7] V. Pata and S. Zelik, Attractors and their regularity for 2-D wave equation with nonlinear damping,, Adv. Math. Sci. Appl., 17 (2007), 225. [8] R. Temam, "Infinite-Dimensional Dynamical Systems in Mechanics and Physics,", Second edition, 68 (1997). [9] C.-K. Zhong, M.-H. Yang and C.-Y. Sun, The existence of global attractors for the norm-to-weak continuous semigroup and application to the nonlinear reaction-diffusion equations,, J. Differential Equations, 223 (2006), 367. doi: 10.1016/j.jde.2005.06.008.

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##### References:
 [1] A. V. Babin and M. I. Vishik, "Attractors of Evolution Equations,", Studies in Mathematics and its Applications, 25 (1992). [2] V. V. Chepyzhov and M. I. Vishik, "Attractors for Equations of Mathematical Physics,'', American Mathematical Society Colloquium Publications, 49 (2002). [3] J. K. Hale, "Asymptotic Behavior of Dissipative Systems,", Mathematical Surveys and Monographs, 25 (1988). [4] A. Haraux, "Systèmes Dynamiques Dissipatifs et Applications,", Recherches en Mathématiques Appliquées, 17 (1991). [5] A. Miranville and S. Zelik, Attractors for dissipative partial differential equations in bounded and unbounded domains,, in, (2008), 103. [6] V. Pata and S. Zelik, A result on the existence of global attractors for semigroups of closed operators,, Commun. Pure Appl. Anal., 6 (2007), 481. doi: 10.3934/cpaa.2007.6.481. [7] V. Pata and S. Zelik, Attractors and their regularity for 2-D wave equation with nonlinear damping,, Adv. Math. Sci. Appl., 17 (2007), 225. [8] R. Temam, "Infinite-Dimensional Dynamical Systems in Mechanics and Physics,", Second edition, 68 (1997). [9] C.-K. Zhong, M.-H. Yang and C.-Y. Sun, The existence of global attractors for the norm-to-weak continuous semigroup and application to the nonlinear reaction-diffusion equations,, J. Differential Equations, 223 (2006), 367. doi: 10.1016/j.jde.2005.06.008.
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