Skip to Main Content
Quarterly of Applied Mathematics

Quarterly of Applied Mathematics

Online ISSN 1552-4485; Print ISSN 0033-569X

   
 
 

 

A regularizing effect of nonlinear transport equations


Author: Felix Otto
Journal: Quart. Appl. Math. 56 (1998), 355-375
MSC: Primary 35L65; Secondary 35F25, 35Q35, 76S05, 82C70
DOI: https://doi.org/10.1090/qam/1622511
MathSciNet review: MR1622511
Full-text PDF Free Access

Abstract | References | Similar Articles | Additional Information

Abstract: We consider the semigroup on ${L^1}\left ( {\mathbb {R}^n} \right )$ defined by the nonlinear transport equation for the scalar $s$, \[ {\partial _t}s + div\left ( f\left ( s \right )u \right ) = 0 \qquad in \left ( 0, \infty \right ) \times {\mathbb {R}^n}\] for given velocity field $u$. We show that this nonlinear semigroup is Hölder continuous for $t > 0$ in the uniform operator topology, provided the graph of $f$ has no linear segments. This continuity property—which expresses a regularizing effect of the nonlinearity in the transport equation—is robust with respect to the spatial behaviour of the time-independent velocity field $u$.


References [Enhancements On Off] (What's this?)


Similar Articles

Retrieve articles in Quarterly of Applied Mathematics with MSC: 35L65, 35F25, 35Q35, 76S05, 82C70

Retrieve articles in all journals with MSC: 35L65, 35F25, 35Q35, 76S05, 82C70


Additional Information

Article copyright: © Copyright 1998 American Mathematical Society