On the Extreme Points of the Unit Ball in the Space of Solenoidal Vector Measures on the Plane

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Authors

  • Nikolay A. Gusev Moscow Institute of Physics and Technology, 9 Institutskiy per., Dolgoprudny, Moscow Region, 141700, Russia Author

Correspondence: Nikolay A. Gusev n.a.gusev@gmail.com

DOI:

https://doi.org/10.5890/DNC.2020.12.005

Abstract

We consider the space of finite divergence-free Borel vector measures on~$\mathbb R^d$, endowed with the total variation norm. For $d=2$ we present a characterization of the extreme points of the unit ball in this space. This allows one to decompose (for $d=2$) any finite divergence-free vector measure into measures induced by closed Lipschitz curves. The results are based on a joint work with P. Bonicatto.

References

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[7] Phelps, R.R. (2001), { Lectures on Choquet's Theorem}, Lecture Notes in Mathematics, Springer Berlin Heidelberg.

[8] Bonicatto, P. and Gusev, N.A. (2019), On the structure of divergence-free measures on the plane, In preparation.

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[10] Bianchini, S. and Gusev, N.A. (2016), Steady nearly incompressible vector fields in two-dimension: Chain rule and renormalization, Archive for Rational Mechanics and Analysis, 222(2), 451-505.

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PublishedDecember 2020

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How to Cite

Gusev, N. A. (2020). On the Extreme Points of the Unit Ball in the Space of Solenoidal Vector Measures on the Plane. Discontinuity, Nonlinearity, and Complexity, 9(4), 525-528. https://doi.org/10.5890/DNC.2020.12.005