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- W2023169395 abstract "Abstract In this brief note, we state the main result of Haller [G. Haller, A variational theory of hyperbolic Lagrangian coherent structures, Physica D 240 (7) (2011) 574–598] on a variational approach to Lagrangian coherent structures (LCSs) more precisely by adding an extra assumption to ensure the existence of the involved derivatives. Under that assumption we further simplify the positive definiteness condition on the matrix L , which is also referred to as “hyperbolicity test”, to a condition on the second-order directional derivative of the largest eigenvalue. This extends an observation in the two-dimensional case made by Farazmand and Haller [M. Farazmand, G. Haller, Erratum and addendum to “A variational theory of hyperbolic Lagrangian coherent structures [Physica D 240 (2011) 574–598]”, Physica D 241 (4) (2012) 439–441] on the simplified detection of LCS from finite-time Lyapunov exponent ridges." @default.
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- W2023169395 date "2012-09-01" @default.
- W2023169395 modified "2023-09-25" @default.
- W2023169395 title "Comment on “A variational theory of hyperbolic Lagrangian coherent structures, Physica D 240 (2011) 574–598”" @default.
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