Non-Borel set/Advanced: Revision history

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30 June 2009

20 June 2009

  • curprev 12:2712:27, 20 June 2009‎ imported>Boris Tsirelson‎ m 2,274 bytes +2,149‎ No edit summary
  • curprev 12:2412:24, 20 June 2009‎ imported>Boris Tsirelson‎ m 2,273 bytes +1‎ No edit summary
  • curprev 12:2012:20, 20 June 2009‎ imported>Boris Tsirelson‎ m 2,272 bytes +18‎ No edit summary
  • curprev 12:1612:16, 20 June 2009‎ imported>Boris Tsirelson‎ 2,254 bytes +2,129‎ New page: {{subpages}} Usually, it is rather easy to prove that a given set is Borel (see below). It is much harder to prove that the set ''A'' is non-Borel; see Advanced if you are acquainted with...
  • curprev 12:1212:12, 20 June 2009‎ imported>Boris Tsirelson‎ 329 bytes +204‎ see book (moved from the article)

19 June 2009

  • curprev 01:2901:29, 19 June 2009‎ imported>Boris Tsirelson‎ 125 bytes +125‎ complete in the class of analytic sets
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