Sets of determination for parabolic functions on a half-space
Ranošová, Jarmila
Commentationes Mathematicae Universitatis Carolinae, Tome 35 (1994), p. 497-513 / Harvested from Czech Digital Mathematics Library

We characterize all subsets $M$ of $\Bbb R^n \times \Bbb R^+$ such that $$ \sup\limits_{X\in \Bbb R^n \times \Bbb R^+}u(X) = \sup\limits_{X\in M}u(X) $$ for every bounded parabolic function $u$ on $\Bbb R^n \times \Bbb R^+$. The closely related problem of representing functions as sums of Weierstrass kernels corresponding to points of $M$ is also considered. The results provide a parabolic counterpart to results for classical harmonic functions in a ball, see References. As a by-product the question of representability of probability continuous distributions as sums of multiples of normal distributions is investigated.

Publié le : 1994-01-01
Classification:  31B10,  35C15,  35K05,  35K15,  60E99
@article{118689,
     author = {Jarmila Rano\v sov\'a},
     title = {Sets of determination for parabolic functions on a half-space},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     volume = {35},
     year = {1994},
     pages = {497-513},
     zbl = {0808.35043},
     mrnumber = {1307276},
     language = {en},
     url = {http://dml.mathdoc.fr/item/118689}
}
Ranošová, Jarmila. Sets of determination for parabolic functions on a half-space. Commentationes Mathematicae Universitatis Carolinae, Tome 35 (1994) pp. 497-513. http://gdmltest.u-ga.fr/item/118689/

Aikawa H. Sets of determination for harmonic function in an NTA domains, preprint, 1992. | MR 1376083

Bonsall F.F. Decomposition of functions as sums of elementary functions, Quart J. Math. Oxford (2) 37 (1986), 129-136. (1986) | MR 0841422

Bonsall F.F. Domination of the supremum of a bounded harmonic function by its supremum over a countable subset, Proc. Edinburgh Math. Soc. 30 (1987), 441-477. (1987) | MR 0908454 | Zbl 0658.31001

Bonsall F.F. Some dual aspects of the Poisson kernel, Proc. Edinburgh Math. Soc. 33 (1990), 207-232. (1990) | MR 1057750 | Zbl 0704.31001

Doob J.L. Classical Potential Theory and Its Probabilistic Counterpart, Springer-Verlag New York (1984). (1984) | MR 0731258 | Zbl 0549.31001

Gardiner S.J. Sets of determination for harmonic function, Trans. Amer. Math. Soc. 338 (1993), 233-243. (1993) | MR 1100694

Rudin W. Functional Analysis, McGraw-Hill Book Company (1973). (1973) | MR 0365062 | Zbl 0253.46001

Dudley Ward N.F. Atomic Decompositions of Integrable or Continuous Functions, D.Phil Thesis, University of York, 1991.