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Admissible functions for the Dirichlet space

Javad Mashreghi, Mahmood Shabankhah (2010)

Studia Mathematica

Zero sets and uniqueness sets of the classical Dirichlet space are not completely characterized yet. We define the concept of admissible functions for the Dirichlet space and then apply them to obtain a new class of zero sets for . Then we discuss the relation between the zero sets of and those of .

Alexander’s projective capacity for polydisks and ellipsoids in N

Mieczysław Jędrzejowski (1995)

Annales Polonici Mathematici

Alexander’s projective capacity for the polydisk and the ellipsoid in N is computed. Sharper versions of two inequalities concerning this capacity and some other capacities in N are given. A sequence of orthogonal polynomials with respect to an appropriately defined measure supported on a compact subset K in N is proved to have an asymptotic behaviour in N similar to that of the Siciak homogeneous extremal function associated with K.

An energy estimate for the complex Monge-Ampère operator

Urban Cegrell, Leif Persson (1997)

Annales Polonici Mathematici

We prove an energy estimate for the complex Monge-Ampère operator, and a comparison theorem for the corresponding capacity and energy. The results are pluricomplex counterparts to results in classical potential theory.

Analytic potential theory over the p -adics

Shai Haran (1993)

Annales de l'institut Fourier

Over a non-archimedean local field the absolute value, raised to any positive power α > 0 , is a negative definite function and generates (the analogue of) the symmetric stable process. For α ( 0 , 1 ) , this process is transient with potential operator given by M. Riesz’ kernel. We develop this potential theory purely analytically and in an explicit manner, obtaining special features afforded by the non-archimedean setting ; e.g. Harnack’s inequality becomes an equality.

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