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Lagrangian Representations for Linear and Nonlinear Transport

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Abstract

In this note we present a unifying approach for two classes of first-order partial differential equations: we introduce the notion of Lagrangian representation in the settings of continuity equation and scalar conservation laws. This yields, on the one hand, the uniqueness of weak solutions to transport equation driven by a two-dimensional BV nearly incompressible vector field. On the other hand, it is proved that the entropy dissipation measure for scalar conservation laws in one space dimension is concentrated on countably many Lipschitz curves.

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Authors and Affiliations

  1. Scuola Internazionale Superiore di Studi Avanzati (SISSA), Trieste, Italy

    S. Bianchini, P. Bonicatto & E. Marconi

Authors
  1. S. Bianchini
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  2. P. Bonicatto
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  3. E. Marconi
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Corresponding author

Correspondence to S. Bianchini.

Additional information

Translated from Sovremennaya Matematika. Fundamental’nye Napravleniya (Contemporary Mathematics. Fundamental Directions), Vol. 63, No. 3, Differential and Functional Differential Equations, 2017.

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Bianchini, S., Bonicatto, P. & Marconi, E. Lagrangian Representations for Linear and Nonlinear Transport. J Math Sci 253, 642–659 (2021). https://doi.org/10.1007/s10958-021-05259-9

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