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portada on the problem of plateau / subharmonic functions (in English)
Type
Physical Book
Author
Publisher
Year
1971
Language
Inglés
Pages
109
Format
Paperback
Dimensions
22.9 x 15.2 x 1.0 cm
Weight
0.26 kg.
ISBN
3540054790
ISBN13
9783540054795

on the problem of plateau / subharmonic functions (in English)

T. Rado (Author) · Springer · Paperback

on the problem of plateau / subharmonic functions (in English) - Rado, T.

Physical Book

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Synopsis "on the problem of plateau / subharmonic functions (in English)"

A convex function f may be called sublinear in the following sense; if a linear function l is:: =: j at the boundary points of an interval, then l: > j in the interior of that interval also. If we replace the terms interval and linear junction by the terms domain and harmonic function, we obtain a statement which expresses the characteristic property of subharmonic functions of two or more variables. This ge- neralization, formulated and developed by F. RIEsz, immediately at- tracted the attention of many mathematicians, both on account of its intrinsic interest and on account of the wide range of its applications. If f (z) is an analytic function of the complex variable z = x + i y. then If (z) I is subharmonic. The potential of a negative mass-distribu- tion is subharmonic. In differential geometry, surfaces of negative curvature and minimal surfaces can be characterized in terms of sub- harmonic functions. The idea of a subharmonic function leads to significant applications and interpretations in the fields just referred to, and- conversely, every one of these fields is an apparently in- exhaustible source of new theorems on subharmonic functions, either by analogy or by direct implication.

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