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A BDF2-Approach for the Non-Linear Fokker-Planck Equation Plazotta, Simon
Description
In this talk I will discuss the construction of approximate solutions for the Non-linear Fokker-Planck equation. We utilize the $L^2$-Wasserstein gradient flow structure of this PDEs to perform a semi discretization in time by means of the variational BDF2 method. Our approach can be considered as the natural second order analogue of the Minimizing Movement or JKO scheme. In comparison to our own recent work on constructing solutions to $\lambda$-contractive gradient flows in abstract metric spaces, the technique presented here exploits the differential structure of the underlying $L^2$-Wasserstein space. We directly prove that the obtained limit curve is a weak solution of the non-linear Fokker-Planck equation without using the abstract theory of curves of maximal slope. Additionally, we provide strong $L^m$ convergence instead of merely weak convergence in the $L^2$-Wasserstein topology of the time-discrete approximations.
Item Metadata
Title |
A BDF2-Approach for the Non-Linear Fokker-Planck Equation
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Creator | |
Publisher |
Banff International Research Station for Mathematical Innovation and Discovery
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Date Issued |
2018-04-12T08:48
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Description |
In this talk I will discuss the construction of approximate solutions for the Non-linear Fokker-Planck equation. We utilize the $L^2$-Wasserstein gradient flow structure of this PDEs to perform a semi discretization in time by means of the variational BDF2 method. Our approach can be considered as the natural second order analogue of the Minimizing Movement or JKO scheme. In comparison to our own recent work on constructing solutions to $\lambda$-contractive gradient flows in abstract metric spaces, the technique presented here exploits the differential structure of the underlying $L^2$-Wasserstein space. We directly prove that the obtained limit curve is a weak solution of the non-linear Fokker-Planck equation without using the abstract theory of curves of maximal slope. Additionally, we provide strong $L^m$ convergence instead of merely weak convergence in the $L^2$-Wasserstein topology of the time-discrete approximations.
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Extent |
30 minutes
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Subject | |
Type | |
File Format |
video/mp4
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Language |
eng
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Notes |
Author affiliation: Technical University of Munich
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Series | |
Date Available |
2018-10-12
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
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DOI |
10.14288/1.0372555
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URI | |
Affiliation | |
Peer Review Status |
Unreviewed
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Scholarly Level |
Graduate
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Rights URI | |
Aggregated Source Repository |
DSpace
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Rights
Attribution-NonCommercial-NoDerivatives 4.0 International