A Stein Criterion Via Divisors for Domains Over Stein Manifolds

• Autores: Daniel Breaz, Viorel Vâjâitu Vâjâitu
• Localización: Mathematica scandinavica, ISSN 0025-5521, Vol. 115, Nº 2, 2014, págs. 287-302
• Idioma: inglés
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• Resumen

  • It is shown that a domain $X$ over a Stein manifold is Stein if the following two conditions are fulfilled: a) the cohomology group $H^i(X,\mathscr{O})$ vanishes for $i \geq 2$ and b) every topologically trivial holomorphic line bundle over $X$ admits a non-trivial meromorphic section. As a consequence we recover, with a different proof, a known result due to Siu stating that a domain $X$ over a Stein manifold $Y$ is Stein provided that $H^i(X,\mathscr{O})=0$ for $i \geq 1$.