Examples concerning Whitney's Cm extension problem

Edward Bierstone, Charles Fefferman, Pierre D. Milman, WiesŁaw PawŁucki

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


We present several examples connected with our articles on Whitney's extension problem. The first shows that Glaeser iterations cannot be avoided in the Cm extension criterion of [F2], and the remaining three are counterexamples to Cm extension assuming a weaker criterion that was used to prove a C extension theorem for closed subanalytic sets, in [BMP1].

Original languageEnglish (US)
Pages (from-to)833-845
Number of pages13
JournalMathematical Research Letters
Issue number5-6
StatePublished - 2006

All Science Journal Classification (ASJC) codes

  • General Mathematics


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