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= PDE and Geometric Analysis Seminar - Fall 2010=
The seminar will be held  in room 901 of Van Vleck Hall on Mondays from 3:30pm - 4:30pm, unless indicated otherwise.
 
===[[Previous PDE/GA seminars]]===
===[[Fall 2019-Spring 2020 | Tentative schedule for Fall 2019-Spring 2020]]===
 
== PDE GA Seminar Schedule Fall 2018-Spring 2019 ==


The seminar will be held  in room B115 of Van Vleck Hall on Mondays from 3:30pm - 4:30pm


== Seminar Schedule ==
{| cellpadding="8"
{| cellpadding="8"
!align="left" | date   
!style="width:20%" align="left" | date   
!align="left" | speaker
!align="left" | speaker
!align="left" | title
!align="left" | title
!align="left" | host(s)
!style="width:20%" align="left" | host(s)
|-
 
|Sept 13
|-
|Fausto Ferrari (Bologna)
|August 31 (FRIDAY),
|[[#Fausto Ferrari (Bologna)|
| Julian Lopez-Gomez (Complutense University of Madrid)
''Semilinear PDEs and some symmetry properties of stable solutions'']]
|[[#Julian Lopez-Gomez | The theorem of characterization of the Strong Maximum Principle ]]
|Misha
| Rabinowitz
|-
 
|Sept 27
|- 
|Arshak Petrosyan (Purdue)
|September 10,
|[[#Arshak Petrosyan (Purdue)|
| Hiroyoshi Mitake (University of Tokyo)
''TBA'']]
|[[#Hiroyoshi Mitake | On approximation of time-fractional fully nonlinear equations ]]
|Misha
| Tran
|-
|September 12 and September 14,
| Gunther Uhlmann (UWash)
|[[#Gunther Uhlmann | TBA ]]
| Li
|- 
|September 17,
| Changyou Wang (Purdue)
|[[#Changyou Wang | Some recent results on mathematical analysis of Ericksen-Leslie System ]]
| Tran
|-
|-
|Oct 7, Thursday, 4 pm, Room: TBA. '''Special day, time & room.'''
|Sep 28, Colloquium
|Changyou Wang (U. of Kentucky)
| [https://www.math.cmu.edu/~gautam/sj/index.html Gautam Iyer] (CMU)
|[[#Changyou Wang (U. of Kentucky)|
|[[#Sep 28: Gautam Iyer (CMU)| Stirring and Mixing ]]
''TBA'']]
| Thiffeault
|Misha
|- 
|October 1,
| Matthew Schrecker (UW)
|[[#Matthew Schrecker | Finite energy methods for the 1D isentropic Euler equations ]]
| Kim and Tran
|- 
|October 8,
| Anna Mazzucato (PSU)
|[[#Anna Mazzucato | TBA ]]
| Li and Kim
|- 
|October 15,
| Lei Wu (Lehigh)
|[[#Lei Wu | Hydrodynamic Limits in Kinetic Equations with Boundary Layer Effects ]]
| Kim
|- 
|October 22,
| Annalaura Stingo (UCD)
|[[#Annalaura Stingo | TBA ]]
| Mihaela Ifrim
|- 
|October 29,
| Yeon-Eung Kim (UW)
|[[#Yeon-Eung Kim | TBA ]]
| Kim and Tran
|- 
|November 5,
| Albert Ai (UC Berkeley)
|[[#Albert Ai | TBA ]]
| Mihaela Ifrim
|-  
|December 3,
| Trevor Leslie (UW)
|[[#Trevor Leslie | TBA ]]
| Kim and Tran
|-
|December 10,
( )
|[[#  | TBA ]]
|-
|January 28,
|   ( )
|[[#  | TBA ]]
|
|-
|-
|Oct 11
|Time: TBD,
|Philippe LeFloch (Paris VI)
| Jessica Lin (McGill University)
|[[#Philippe LeFloch (Paris VI)|
|[[#Jessica Lin | TBA ]]
''TBA'']]
| Tran
|Misha
|-   
|March 4
| Vladimir Sverak (Minnesota)
|[[#Vladimir Sverak | TBA(Wasow lecture) ]]
| Kim
|-
|-
|Oct 29 '''Friday'''
|March 18,
|[http://people.virginia.edu/~im3p/ Irina Mitrea] (IMA & U of Virginia)
| Spring recess (Mar 16-24, 2019)
|[[#Irina Mitrea |
|[[# | ]]
''TBA'']]
|
|[https://www.math.wisc.edu/~wimaw/ WiMaW]
|-
|-
|Nov 8
|Maria Gualdani (UT Austin)
|[[#Maria Gualdani (UT Austin)|
''TBA'']]
|Misha
|-
|-
|April 29,
|  ( )
|[[#  | TBA ]]
|}
|}
== Abstracts ==
== Abstracts ==
===Fausto Ferrari (Bologna)===
''Semilinear PDEs and some symmetry properties of stable solutions''


I will deal with stable solutions of semilinear elliptic PDE's  
===Julian Lopez-Gomez===
and some of their symmetry's properties. Moreover, I will introduce some weighted Poincaré inequalities obtained by combining the notion of stable solution with the definition of weak solution.
 
Title: The theorem of characterization of the Strong Maximum Principle
 
Abstract: The main goal of this talk is to discuss the classical (well known) versions of the strong maximum principle of Hopf and Oleinik, as well as the generalized maximum principle of Protter and Weinberger. These results serve as steps towards the theorem of characterization of the strong maximum principle of the speaker, Molina-Meyer and Amann, which substantially generalizes  a popular result of Berestycki, Nirenberg and Varadhan.
 
===Hiroyoshi Mitake===
Title: On approximation of time-fractional fully nonlinear equations
 
Abstract: Fractional calculus has been studied extensively these years in wide fields. In this talk, we consider time-fractional fully nonlinear equations. Giga-Namba (2017) recently has established the well-posedness (i.e., existence/uniqueness) of viscosity solutions to this equation. We introduce a natural approximation in terms of elliptic theory and prove the convergence. The talk is based on the joint work with Y. Giga (Univ. of Tokyo) and Q. Liu (Fukuoka Univ.)
 
 
 
===Changyou Wang===
 
Title: Some recent results on mathematical analysis of Ericksen-Leslie System
 
Abstract: The Ericksen-Leslie system is the governing equation  that describes the hydrodynamic evolution of nematic liquid crystal materials, first introduced by J. Ericksen and F. Leslie back in 1960's. It is a coupling system between the underlying fluid velocity field and the macroscopic average orientation field of the nematic liquid crystal molecules. Mathematically, this system couples the Navier-Stokes equation and the harmonic heat flow into the unit sphere. It is very challenging to analyze such a system by establishing the existence, uniqueness, and (partial) regularity of global (weak/large) solutions, with many basic questions to be further exploited. In this talk, I will report some results we obtained from the last few years.
 
===Matthew Schrecker===
 
Title: Finite energy methods for the 1D isentropic Euler equations


===Arshak Petrosyan (Purdue)===
Abstract: In this talk, I will present some recent results concerning the 1D isentropic Euler equations using the theory of compensated compactness in the framework of finite energy solutions. In particular, I will discuss the convergence of the vanishing viscosity limit of the compressible Navier-Stokes equations to the Euler equations in one space dimension. I will also discuss how the techniques developed for this problem can be applied to the existence theory for the spherically symmetric Euler equations and the transonic nozzle problem. One feature of these three problems is the lack of a priori estimates in the space $L^\infty$, which prevent the application of the standard theory for the 1D Euler equations.
''TBA''


===Changyou Wang (U. of Kentucky)===
===Lei Wu===
''TBA''


===Philippe LeFloch (Paris VI)===
Title: Hydrodynamic Limits in Kinetic Equations with Boundary Layer Effects
''TBA''


===Irina Mitrea===
Abstract: Hydrodynamic limits concern the rigorous derivation of fluid equations from kinetic theory. In bounded domains, kinetic boundary corrections (i.e. boundary layers) play a crucial role. In this talk, I will discuss a fresh formulation to characterize the boundary layer with geometric correction, and in particular, its applications in 2D smooth convex domains with in-flow or diffusive boundary conditions. We will focus on some newly developed techniques to justify the asymptotic expansion, e.g. weighted regularity in Milne problems and boundary layer decomposition.
''TBA''
===Maria Gualdani (UT Austin)===
''TBA''

Revision as of 23:52, 19 September 2018

The seminar will be held in room 901 of Van Vleck Hall on Mondays from 3:30pm - 4:30pm, unless indicated otherwise.

Previous PDE/GA seminars

Tentative schedule for Fall 2019-Spring 2020

PDE GA Seminar Schedule Fall 2018-Spring 2019

date speaker title host(s)
August 31 (FRIDAY), Julian Lopez-Gomez (Complutense University of Madrid) The theorem of characterization of the Strong Maximum Principle Rabinowitz
September 10, Hiroyoshi Mitake (University of Tokyo) On approximation of time-fractional fully nonlinear equations Tran
September 12 and September 14, Gunther Uhlmann (UWash) TBA Li
September 17, Changyou Wang (Purdue) Some recent results on mathematical analysis of Ericksen-Leslie System Tran
Sep 28, Colloquium Gautam Iyer (CMU) Stirring and Mixing Thiffeault
October 1, Matthew Schrecker (UW) Finite energy methods for the 1D isentropic Euler equations Kim and Tran
October 8, Anna Mazzucato (PSU) TBA Li and Kim
October 15, Lei Wu (Lehigh) Hydrodynamic Limits in Kinetic Equations with Boundary Layer Effects Kim
October 22, Annalaura Stingo (UCD) TBA Mihaela Ifrim
October 29, Yeon-Eung Kim (UW) TBA Kim and Tran
November 5, Albert Ai (UC Berkeley) TBA Mihaela Ifrim
December 3, Trevor Leslie (UW) TBA Kim and Tran
December 10, ( ) TBA
January 28, ( ) TBA
Time: TBD, Jessica Lin (McGill University) TBA Tran
March 4 Vladimir Sverak (Minnesota) TBA(Wasow lecture) Kim
March 18, Spring recess (Mar 16-24, 2019)
April 29, ( ) TBA

Abstracts

Julian Lopez-Gomez

Title: The theorem of characterization of the Strong Maximum Principle

Abstract: The main goal of this talk is to discuss the classical (well known) versions of the strong maximum principle of Hopf and Oleinik, as well as the generalized maximum principle of Protter and Weinberger. These results serve as steps towards the theorem of characterization of the strong maximum principle of the speaker, Molina-Meyer and Amann, which substantially generalizes a popular result of Berestycki, Nirenberg and Varadhan.

Hiroyoshi Mitake

Title: On approximation of time-fractional fully nonlinear equations

Abstract: Fractional calculus has been studied extensively these years in wide fields. In this talk, we consider time-fractional fully nonlinear equations. Giga-Namba (2017) recently has established the well-posedness (i.e., existence/uniqueness) of viscosity solutions to this equation. We introduce a natural approximation in terms of elliptic theory and prove the convergence. The talk is based on the joint work with Y. Giga (Univ. of Tokyo) and Q. Liu (Fukuoka Univ.)


Changyou Wang

Title: Some recent results on mathematical analysis of Ericksen-Leslie System

Abstract: The Ericksen-Leslie system is the governing equation that describes the hydrodynamic evolution of nematic liquid crystal materials, first introduced by J. Ericksen and F. Leslie back in 1960's. It is a coupling system between the underlying fluid velocity field and the macroscopic average orientation field of the nematic liquid crystal molecules. Mathematically, this system couples the Navier-Stokes equation and the harmonic heat flow into the unit sphere. It is very challenging to analyze such a system by establishing the existence, uniqueness, and (partial) regularity of global (weak/large) solutions, with many basic questions to be further exploited. In this talk, I will report some results we obtained from the last few years.

Matthew Schrecker

Title: Finite energy methods for the 1D isentropic Euler equations

Abstract: In this talk, I will present some recent results concerning the 1D isentropic Euler equations using the theory of compensated compactness in the framework of finite energy solutions. In particular, I will discuss the convergence of the vanishing viscosity limit of the compressible Navier-Stokes equations to the Euler equations in one space dimension. I will also discuss how the techniques developed for this problem can be applied to the existence theory for the spherically symmetric Euler equations and the transonic nozzle problem. One feature of these three problems is the lack of a priori estimates in the space $L^\infty$, which prevent the application of the standard theory for the 1D Euler equations.

Lei Wu

Title: Hydrodynamic Limits in Kinetic Equations with Boundary Layer Effects

Abstract: Hydrodynamic limits concern the rigorous derivation of fluid equations from kinetic theory. In bounded domains, kinetic boundary corrections (i.e. boundary layers) play a crucial role. In this talk, I will discuss a fresh formulation to characterize the boundary layer with geometric correction, and in particular, its applications in 2D smooth convex domains with in-flow or diffusive boundary conditions. We will focus on some newly developed techniques to justify the asymptotic expansion, e.g. weighted regularity in Milne problems and boundary layer decomposition.