<p>In this paper we extend to an infinite dimensional setting some results on the Shadowing property that are known on finite dimensional compact manifolds without border and in <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\mathbb {R}^n\)</EquationSource> <EquationSource Format="MATHML"><math> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>n</mi> </msup> </math></EquationSource> </InlineEquation>. In fact, we show that if <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(\{{\mathcal {T}}(t):t\ge 0\}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mo stretchy="false">{</mo> <mi mathvariant="script">T</mi> <mo stretchy="false">(</mo> <mi>t</mi> <mo stretchy="false">)</mo> <mo>:</mo> <mi>t</mi> <mo>≥</mo> <mn>0</mn> <mo stretchy="false">}</mo> </mrow> </math></EquationSource> </InlineEquation> is a Morse-Smale semigroup defined in a Hilbert space, with global attractor <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(\mathcal {A}\)</EquationSource> <EquationSource Format="MATHML"><math> <mi mathvariant="script">A</mi> </math></EquationSource> </InlineEquation> and non-wandering set given by its equilibria, then <InlineEquation ID="IEq4"> <EquationSource Format="TEX">\({\mathcal {T}}(1)|_{\mathcal {A}}:\mathcal {A}\rightarrow \mathcal {A} \)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msub> <mrow> <mi mathvariant="script">T</mi> <mrow> <mo stretchy="false">(</mo> <mn>1</mn> <mo stretchy="false">)</mo> </mrow> <mo stretchy="false">|</mo> </mrow> <mi mathvariant="script">A</mi> </msub> <mo>:</mo> <mi mathvariant="script">A</mi> <mo stretchy="false">→</mo> <mi mathvariant="script">A</mi> </mrow> </math></EquationSource> </InlineEquation> admits the Lipschitz Shadowing property. Moreover, for any positively invariant bounded neighborhood <InlineEquation ID="IEq5"> <EquationSource Format="TEX">\(\mathcal {U}\supset \mathcal {A}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi mathvariant="script">U</mi> <mo>⊃</mo> <mi mathvariant="script">A</mi> </mrow> </math></EquationSource> </InlineEquation> of the global attractor, the map <InlineEquation ID="IEq6"> <EquationSource Format="TEX">\({\mathcal {T}}(1)|_{\mathcal {U}}:\mathcal {U}\rightarrow \mathcal {U}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msub> <mrow> <mi mathvariant="script">T</mi> <mrow> <mo stretchy="false">(</mo> <mn>1</mn> <mo stretchy="false">)</mo> </mrow> <mo stretchy="false">|</mo> </mrow> <mi mathvariant="script">U</mi> </msub> <mo>:</mo> <mi mathvariant="script">U</mi> <mo stretchy="false">→</mo> <mi mathvariant="script">U</mi> </mrow> </math></EquationSource> </InlineEquation> has the Hölder–Shadowing property. As applications, we obtain results related to the structural stability of Morse-Smale semigroups, that were only known on finite dimension, and continuity of global attractors.</p>

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Shadowing for infinite dimensional Morse–Smale dynamical systems

  • José M. Arrieta,
  • Alexandre N. Carvalho,
  • Carlos R. Takaessu Jr

摘要

In this paper we extend to an infinite dimensional setting some results on the Shadowing property that are known on finite dimensional compact manifolds without border and in \(\mathbb {R}^n\) R n . In fact, we show that if \(\{{\mathcal {T}}(t):t\ge 0\}\) { T ( t ) : t 0 } is a Morse-Smale semigroup defined in a Hilbert space, with global attractor \(\mathcal {A}\) A and non-wandering set given by its equilibria, then \({\mathcal {T}}(1)|_{\mathcal {A}}:\mathcal {A}\rightarrow \mathcal {A} \) T ( 1 ) | A : A A admits the Lipschitz Shadowing property. Moreover, for any positively invariant bounded neighborhood \(\mathcal {U}\supset \mathcal {A}\) U A of the global attractor, the map \({\mathcal {T}}(1)|_{\mathcal {U}}:\mathcal {U}\rightarrow \mathcal {U}\) T ( 1 ) | U : U U has the Hölder–Shadowing property. As applications, we obtain results related to the structural stability of Morse-Smale semigroups, that were only known on finite dimension, and continuity of global attractors.