Abstract
We continue to work in \({{\tilde{D}}_{k}}\), where the bumped perturbed flow (2.6.27) is defined. From Proposition 3.1.1, we know the existence of the C n codimension 1 center-unstable manifold \(W_{{{{\delta }_{1}},\delta }}^{{cu}}\), the Cn codimension 1 center-stable manifold \(W_{{{{\delta }_{1}},\delta }}^{{cs}}\), and the Cn codimension 2 center manifold \({{W}_{{{{\delta }_{1}},\delta }}}\), under the bumped perturbed flow (2.6.27). More specifically, \(W_{{{{\delta }_{1}},\delta }}^{{cu}}\) exists in \(\tilde{D}_{k}^{{(1)}}\); moreover, it is overflowing invariant. \(W_{{{{\delta }_{1}},\delta }}^{{cs}}\) exists in \(\tilde{D}_{k}^{{(2)}}\); moreover, it is inflowing invariant. Then \({{W}_{{{{\delta }_{1}},\delta }}} \equiv W_{{{{\delta }_{1}},\delta }}^{{cu}} \cap W_{{{{\delta }_{1}},\delta }}^{{cs}}\) exists in \(\tilde{D}_{k}^{{(2)}}\), and it is inflowing invariant. Since the fibration theorem is concerned with the fiber representations of \(W_{{{{\delta }_{1}},\delta }}^{{cu}}\) and \(W_{{{{\delta }_{1}},\delta }}^{{cs}}\) with respect to \({{W}_{{{{\delta }_{1}},\delta }}}\) as the base, we have to work in a region where \({{W}_{{{{\delta }_{1}},\delta }}}\) exists. Therefore, we can work only inside \(\tilde{D}_{k}^{{(2)}}\). We know that \({{W}_{{{{\delta }_{1}},\delta }}}\) is inflowing invariant in \(\tilde{D}_{k}^{{(2)}}\). Next, we will prove the following lemma:
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© 1997 Springer Science+Business Media New York
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Li, C., Wiggins, S. (1997). Fibrations of the Persistent Invariant Manifolds. In: Invariant Manifolds and Fibrations for Perturbed Nonlinear Schrödinger Equations. Applied Mathematical Sciences, vol 128. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-1838-8_4
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DOI: https://doi.org/10.1007/978-1-4612-1838-8_4
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