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BEGIN:VEVENT
UID:f267449910eef1a0f77a3adc77aa0790
CATEGORIES:Hyperbolic & Dispersive PDE Seminar
CREATED:20240906T103514
SUMMARY:John Stalker -- Prescribing initial data for the Einstein equations at a singularity
LOCATION:Hill 705
DESCRIPTION: Initial point singularities are of interest in general relativity  because
  considerable evidence suggests that our universe had  one. Prescribing ini
 tial data for such solutions presents some  obvious problems though. Work o
 ver the last few decades has  explored how to do this for a variety of reas
 onable matter models  though, including polytropic fluids, electromagnetic 
 radiation,  and kinetic theory, with or without collisions. This talk will 
  mostly be an overview but I will briefly discuss some recent  work with Ho
  Lee, Ernesto Nungesser and Paul Tod.\n
X-ALT-DESC;FMTTYPE=text/html:<p><span style="color: #000000; font-family: 'Segoe UI', 'Segoe UI Web (Wes
 t European)', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', 
 sans-serif; font-size: 14.6667px; font-style: normal; font-weight: 400; let
 ter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-
 transform: none; widows: 2; word-spacing: 0px; white-space: normal; backgro
 und-color: #ffffff; float: none;">&nbsp;Initial point singularities are of 
 interest in general relativity</span><br style="color: #000000; font-family
 : 'Segoe UI', 'Segoe UI Web (West European)', -apple-system, BlinkMacSystem
 Font, Roboto, 'Helvetica Neue', sans-serif; font-size: 14.6667px; font-styl
 e: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align
 : start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0
 px; white-space: normal; background-color: #ffffff;"><span style="color: #0
 00000; font-family: 'Segoe UI', 'Segoe UI Web (West European)', -apple-syst
 em, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif; font-size: 14
 .6667px; font-style: normal; font-weight: 400; letter-spacing: normal; orph
 ans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 
 2; word-spacing: 0px; white-space: normal; background-color: #ffffff; float
 : none;">&nbsp; because considerable evidence suggests that our universe ha
 d</span><br style="color: #000000; font-family: 'Segoe UI', 'Segoe UI Web (
 West European)', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue
 ', sans-serif; font-size: 14.6667px; font-style: normal; font-weight: 400; 
 letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; te
 xt-transform: none; widows: 2; word-spacing: 0px; white-space: normal; back
 ground-color: #ffffff;"><span style="color: #000000; font-family: 'Segoe UI
 ', 'Segoe UI Web (West European)', -apple-system, BlinkMacSystemFont, Robot
 o, 'Helvetica Neue', sans-serif; font-size: 14.6667px; font-style: normal; 
 font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; te
 xt-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; white-s
 pace: normal; background-color: #ffffff; float: none;">&nbsp; one. Prescrib
 ing initial data for such solutions presents some</span><br style="color: #
 000000; font-family: 'Segoe UI', 'Segoe UI Web (West European)', -apple-sys
 tem, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif; font-size: 1
 4.6667px; font-style: normal; font-weight: 400; letter-spacing: normal; orp
 hans: 2; text-align: start; text-indent: 0px; text-transform: none; widows:
  2; word-spacing: 0px; white-space: normal; background-color: #ffffff;"><sp
 an style="color: #000000; font-family: 'Segoe UI', 'Segoe UI Web (West Euro
 pean)', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-s
 erif; font-size: 14.6667px; font-style: normal; font-weight: 400; letter-sp
 acing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transf
 orm: none; widows: 2; word-spacing: 0px; white-space: normal; background-co
 lor: #ffffff; float: none;">&nbsp; obvious problems though. Work over the l
 ast few decades has</span><br style="color: #000000; font-family: 'Segoe UI
 ', 'Segoe UI Web (West European)', -apple-system, BlinkMacSystemFont, Robot
 o, 'Helvetica Neue', sans-serif; font-size: 14.6667px; font-style: normal; 
 font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; te
 xt-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; white-s
 pace: normal; background-color: #ffffff;"><span style="color: #000000; font
 -family: 'Segoe UI', 'Segoe UI Web (West European)', -apple-system, BlinkMa
 cSystemFont, Roboto, 'Helvetica Neue', sans-serif; font-size: 14.6667px; fo
 nt-style: normal; font-weight: 400; letter-spacing: normal; orphans: 2; tex
 t-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spa
 cing: 0px; white-space: normal; background-color: #ffffff; float: none;">&n
 bsp; explored how to do this for a variety of reasonable matter models</spa
 n><br style="color: #000000; font-family: 'Segoe UI', 'Segoe UI Web (West E
 uropean)', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', san
 s-serif; font-size: 14.6667px; font-style: normal; font-weight: 400; letter
 -spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-tra
 nsform: none; widows: 2; word-spacing: 0px; white-space: normal; background
 -color: #ffffff;"><span style="color: #000000; font-family: 'Segoe UI', 'Se
 goe UI Web (West European)', -apple-system, BlinkMacSystemFont, Roboto, 'He
 lvetica Neue', sans-serif; font-size: 14.6667px; font-style: normal; font-w
 eight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-ind
 ent: 0px; text-transform: none; widows: 2; word-spacing: 0px; white-space: 
 normal; background-color: #ffffff; float: none;">&nbsp; though, including p
 olytropic fluids, electromagnetic radiation,</span><br style="color: #00000
 0; font-family: 'Segoe UI', 'Segoe UI Web (West European)', -apple-system, 
 BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif; font-size: 14.666
 7px; font-style: normal; font-weight: 400; letter-spacing: normal; orphans:
  2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; w
 ord-spacing: 0px; white-space: normal; background-color: #ffffff;"><span st
 yle="color: #000000; font-family: 'Segoe UI', 'Segoe UI Web (West European)
 ', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
  font-size: 14.6667px; font-style: normal; font-weight: 400; letter-spacing
 : normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: 
 none; widows: 2; word-spacing: 0px; white-space: normal; background-color: 
 #ffffff; float: none;">&nbsp; and kinetic theory, with or without collision
 s. This talk will</span><br style="color: #000000; font-family: 'Segoe UI',
  'Segoe UI Web (West European)', -apple-system, BlinkMacSystemFont, Roboto,
  'Helvetica Neue', sans-serif; font-size: 14.6667px; font-style: normal; fo
 nt-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text
 -indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; white-spa
 ce: normal; background-color: #ffffff;"><span style="color: #000000; font-f
 amily: 'Segoe UI', 'Segoe UI Web (West European)', -apple-system, BlinkMacS
 ystemFont, Roboto, 'Helvetica Neue', sans-serif; font-size: 14.6667px; font
 -style: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-
 align: start; text-indent: 0px; text-transform: none; widows: 2; word-spaci
 ng: 0px; white-space: normal; background-color: #ffffff; float: none;">&nbs
 p; mostly be an overview but I will briefly discuss some recent</span><br s
 tyle="color: #000000; font-family: 'Segoe UI', 'Segoe UI Web (West European
 )', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif
 ; font-size: 14.6667px; font-style: normal; font-weight: 400; letter-spacin
 g: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform:
  none; widows: 2; word-spacing: 0px; white-space: normal; background-color:
  #ffffff;"><span style="color: #000000; font-family: 'Segoe UI', 'Segoe UI 
 Web (West European)', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica
  Neue', sans-serif; font-size: 14.6667px; font-style: normal; font-weight: 
 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0p
 x; text-transform: none; widows: 2; word-spacing: 0px; white-space: normal;
  background-color: #ffffff; float: none;">&nbsp; work with Ho Lee, Ernesto 
 Nungesser and Paul Tod.</span></p>
DTSTAMP:20260828T105631
DTSTART;TZID=America/New_York:20240912T155000
DTEND;TZID=America/New_York:20240912T165000
SEQUENCE:0
TRANSP:OPAQUE
END:VEVENT
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