Cross theorem

Tom 77 / 2001

Marek Jarnicki, Peter Pflug Annales Polonici Mathematici 77 (2001), 295-302 MSC: 32D15, 32D10. DOI: 10.4064/ap77-3-8

Streszczenie

Let $D, G\subset\mathbb C$ be domains, let $A\subset D$, $B\subset G$ be locally regular sets, and let $X:=(D\times B)\cup(A\times G)$. Assume that $A$ is a Borel set. Let $M$ be a proper analytic subset of an open neighborhood of $X$. Then there exists a pure $1$-dimensional analytic subset $\widehat M$ of the envelope of holomorphy $\skew3\widehat X$ of $X$ such that any function separately holomorphic on $X\setminus M$ extends to a holomorphic function on $\skew3\widehat X\setminus\widehat M$. The result generalizes special cases which were studied in [Ökt 1998], [Ökt 1999], and [Sic 2000].

Autorzy

  • Marek JarnickiInstitute of Mathematics
    Jagiellonian University
    Reymonta 4
    30-059 Krak/ow, Poland
    e-mail
  • Peter PflugFachbereich Mathematik
    Carl von Ossietzky Universität Oldenburg
    Postfach 2503
    D-26111 Oldenburg, Germany
    e-mail

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