On the Problem of Plateau / Subharmonic Functions
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.
1000907346
On the Problem of Plateau / Subharmonic Functions
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.
54.99 In Stock
On the Problem of Plateau / Subharmonic Functions

On the Problem of Plateau / Subharmonic Functions

by T. Rado
On the Problem of Plateau / Subharmonic Functions

On the Problem of Plateau / Subharmonic Functions

by T. Rado

Paperback(Reprint of the 1st editions Berlin 1933 and 1937)

$54.99 
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Overview

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.

Product Details

ISBN-13: 9783540054795
Publisher: Springer Berlin Heidelberg
Publication date: 01/04/1971
Series: Ergebnisse der Mathematik und Ihrer Grenzgebiete. 1. Folge , #2
Edition description: Reprint of the 1st editions Berlin 1933 and 1937
Pages: 109
Product dimensions: 0.00(w) x 0.00(h) x 0.02(d)

Table of Contents

I. Curves and surfaces.- II. Minimal surfaces in the small.- III Minimal surfaces in the large.- IV. The non-parametric problem.- V. The problem of Plateau in the parametric form.- VI. The simultaneous problem in the parametric form. Generalizations.- I. Definition and preliminary discussion.- II. Integral means.- III. Criterions and constructions.- IV. Examples.- V. Harmonic majorants.- VI. Representation in terms of potentials.- VII. Analogies between harmonic and subharmonic functions.- References.
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