Delta_1-definability of the non-stationary ideal
47 mins 13 secs,
86.37 MB,
MP3
44100 Hz,
249.76 kbits/sec
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| Description: |
Zdomskyy, L (Universität Wien)
Friday 28 August 2015, 11:30-12:30 |
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| Created: | 2015-09-02 17:55 |
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| Collection: | Mathematical, Foundational and Computational Aspects of the Higher Infinite |
| Publisher: | Isaac Newton Institute |
| Copyright: | Zdomskyy, L |
| Language: | eng (English) |
| Abstract: | The talk will be devoted to the proof of the fact that assuming V=L, for every successor cardinal κ there exists a GCH and cardinal preserving forcing poset P∈L such that in LP the ideal of all non-stationary subsets of κ is Δ1-definable over H(κ+). We shall also discuss the situation for limit κ. |
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