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BEGIN:VEVENT
UID:8d1e9a28efaf5e82b20dce92ca9cacb7
CATEGORIES:Nonlinear Analysis
CREATED:20211206T130004
SUMMARY:Small scale creation in active scalars
LOCATION:Zoom
DESCRIPTION:<p>&nbsp;Abstract: An active scalar is advected by fluid velocity that is d
 etermined by the scalar itself. Active scalars appear in many situations in
  fluid mechanics, with the most classical example being 2D Euler equation i
 n vorticity form. Other prominent examples are the surface quasi-geostrophi
 c (SQG) equation that comes from atmospheric science and the incompressible
  porous media (IPM) equation modeling the fluid flow in porous media. Usual
 ly, active scalar equations are both nonlinear and nonlocal, and their solu
 tions spontaneously generate small scales. In this talk, I will discuss rig
 orous examples of small scale formation that involves infinite in time grow
 th of derivatives for the 2D Euler equation, the SQG equation and the 2D IP
 M equation.</p>
CONTACT: Alexander Kiselev, Duke University
X-EXTRAINFO:Zoom link:\nhttps://rutgers.zoom.us/j/96430905091?pwd=Tkp4N0FlRnk3ZXZLWTl6L
 zRHdkNZdz09\nMeeting ID: 964 3090 5091   Passcode: 491508
DTSTAMP:20260827T113123
DTSTART;TZID=America/New_York:20211208T093000
DTEND;TZID=America/New_York:20211208T103000
SEQUENCE:0
TRANSP:OPAQUE
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