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DTSTART:19700329T010000
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CATEGORIES:Isaac Newton Institute Seminar Series
SUMMARY:Delta_1-definability of the non-stationary ideal -
  Zdomskyy\, L (Universitt Wien)
DTSTART;TZID=Europe/London:20150828T113000
DTEND;TZID=Europe/London:20150828T123000
UID:TALK60499AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/60499
DESCRIPTION:The talk will be devoted to the proof of the fact 
  that assuming $V = L$\, for every successor cardi
 nal  $kappa$ there exists a GCH and cardinal pres
 erving forcing poset $P in  L$ such that in $L^P$ 
 the ideal of all non-stationary subsets of $kappa
 $ is 
\n$Delta_1$-definable over $H(kappa^+)$. We
  shall also discuss the situation for limit $kappa
 $.\n
LOCATION:Seminar Room 1\, Newton Institute
CONTACT:
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