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On the intersection product of analytic cycles

Sławomir Rams (2000)

Annales Polonici Mathematici

We prove that the generalized index of intersection of an analytic set with a closed submanifold (Thm. 4.3) and the intersection product of analytic cycles (Thm. 5.4), which are defined in [T₂], are intrinsic. We define the intersection product of analytic cycles on a reduced analytic space (Def. 5.8) and prove a relation of its degree and the exponent of proper separation (Thm. 6.3).

On the Łojasiewicz exponent of the gradient of a holomorphic function

Andrzej Lenarcik (1998)

Banach Center Publications

The Łojasiewicz exponent of the gradient of a convergent power series h(X,Y) with complex coefficients is the greatest lower bound of the set of λ > 0 such that the inequality | g r a d h ( x , y ) | c | ( x , y ) | λ holds near 0 C 2 for a certain c > 0. In the paper, we give an estimate of the Łojasiewicz exponent of grad h using information from the Newton diagram of h. We obtain the exact value of the exponent for non-degenerate series.

Perturbation results for the local Phragmén-Lindelöf condition and stable homogeneous polynomials.

Rüdiger W. Braun, Reinhold Meise, B. Alan Taylor (2003)

RACSAM

The local Phragmén-Lindelöf condition for analytic varieties in complex n-space was introduced by Hörmander and plays an important role in various areas of analysis. Recently, new necessary geometric properties for a variety satisfying this condition were derived by the present authors. These results are now applied to investigate the homogeneous polynomials P with real coefficients that are stable in the following sense: Whenever f is a holomorphic function that is defined in some neighborhood...

Problème du bord dans l'espace projectif complexe

Tien-Cuong Dinh (1998)

Annales de l'institut Fourier

Nous démontrons qu’une sous-variété réelle Γ de dimension 2 p - 1 et maximalement complexe d’un ouvert ( n - p + 1 ) -linéairement concave X de n est le bord d’un sous-ensemble analytique de dimension p de X Γ si et seulement s’il existe un sous-ensemble ( p - 2 ) -générique V de X * tel que pour tout ν V l’intersection Γ ν n - p + 1 soit le bord d’une surface de Riemann (pour p = 2 , V est 0 -générique si et seulement s’il n’est pas inclus dans une réunion dénombrable d’hyperplans de n * ). Ce théorème généralise le théorème de Wermer-Harvey-Lawson...

Regularity of varieties in strictly pseudoconvex domains.

Franc Forstneric (1988)

Publicacions Matemàtiques

We prove a theorem on the boundary regularity of a purely p-dimensional complex subvariety of a relatively compact, strictly pseudoconvex domain in a Stein manifold. Some applications describing the structure of the polynomial hull of closed curves in Cn are also given.

Remarks on the generalized index of an analytic improper intersection

Krzysztof Jan Nowak (2003)

Annales Polonici Mathematici

This article continues the investigation of the analytic intersection algorithm from the perspective of deformation to the normal cone, carried out in the previous papers of the author [7, 8, 9]. The main theorem asserts that, given an analytic set V and a linear subspace S, every collection of hyperplanes, admissible with respect to an algebraic bicone B, realizes the generalized intersection index of V and S. This result is important because the conditions for a collection of hyperplanes to be...

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