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Difference between revisions of "Analytic landschaft"

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''analytic relief, modulus surface''
 
''analytic relief, modulus surface''
  
The geometric image of the modulus <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/a/a012/a012310/a0123101.png" /> of an analytic function <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/a/a012/a012310/a0123102.png" />, <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/a/a012/a012310/a0123103.png" />. The analytic "landschaft" of a function <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/a/a012/a012310/a0123104.png" /> is the surface over the <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/a/a012/a012310/a0123105.png" />-plane with <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/a/a012/a012310/a0123106.png" />-coordinate <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/a/a012/a012310/a0123107.png" />. An analytic "landschaft" sometimes provides a good illustration of the behaviour of specific functions. For the relief of the principal functions see [[#References|[2]]].
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The geometric image of the modulus $|f(z)|$ of an analytic function $f(z)$, $z=x+iy$. The analytic "landschaft" of a function $f(z)$ is the surface over the $(x,y)$-plane with $z$-coordinate $|f(z)|$. An analytic "landschaft" sometimes provides a good illustration of the behaviour of specific functions. For the relief of the principal functions see [[#References|[2]]].
  
 
====References====
 
====References====
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====Comments====
 
====Comments====
Instead of the German word  "Landschaft" , the English "analytic landscapelandscape" is also used.
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Instead of the German word  "Landschaft" , the English "landscape" is also used.

Revision as of 11:15, 5 October 2014

analytic relief, modulus surface

The geometric image of the modulus $|f(z)|$ of an analytic function $f(z)$, $z=x+iy$. The analytic "landschaft" of a function $f(z)$ is the surface over the $(x,y)$-plane with $z$-coordinate $|f(z)|$. An analytic "landschaft" sometimes provides a good illustration of the behaviour of specific functions. For the relief of the principal functions see [2].

References

[1] A.I. Markushevich, "Theory of functions of a complex variable" , 1 , Chelsea (1977) pp. Chapt. 2 (Translated from Russian)
[2] E. Jahnke, F. Emde, "Tables of functions with formulae and curves" , Dover, reprint (1945) (Translated from German)


Comments

Instead of the German word "Landschaft" , the English "landscape" is also used.

How to Cite This Entry:
Analytic landschaft. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Analytic_landschaft&oldid=13676
This article was adapted from an original article by E.D. Solomentsev (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article