Abstract
In this paper, we consider selection of a sliding vector field of Filippov type on a discontinuity manifold \(\Sigma \) of co-dimension 3 (intersection of three co-dimension 1 manifolds). We propose an extension of the moments vector field to this case, and—under the assumption that \(\Sigma \) is nodally attractive—we prove that our extension delivers a uniquely defined Filippov vector field. As it turns out, the justification of our proposed extension requires establishing invertibility of certain sign matrices. Finally, we also propose the extension of the moments vector field to discontinuity manifolds of co-dimension 4 and higher.
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Notes
The minimum value is \(\frac{-\sqrt{3}-3+3\sqrt{2}}{\sqrt{3}}\) and is attained at \(a=b=c=\frac{1}{\sqrt{3}}\).
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Acknowledgments
The first author gratefully acknowledges the support provided by a Tao Aoqing Visiting Professorship at Jilin University, Changchun (CHINA). The authors are very thankful to the anonymous referee for detecting a few mishaps in an early version of this paper
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Dieci, L., Difonzo, F. On the Inverse of Some Sign Matrices and on the Moments Sliding Vector Field on the Intersection of Several Manifolds: Nodally Attractive Case. J Dyn Diff Equat 29, 1355–1381 (2017). https://doi.org/10.1007/s10884-016-9527-5
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DOI: https://doi.org/10.1007/s10884-016-9527-5
Keywords
- Piecewise smooth systems
- Filippov sliding motion
- Nodally attractive co-dimension 3 manifold
- Moments method