[back]  3.31. Maeder's Owl 
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The Maeder's Owl [ 8 ] is represented by the following equations.
x = v cos(u)  0.5 v ^{2} cos(2 u) 
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y = v sin(u)  0.5 v ^{2} sin(2 u) 
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z = 4exp(1.5log(v))cos(3u/2)/3 
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To represent the area, the two parameters u and v can assume the following values (domain of definition), for example.
u is an element from the set of numbers [0, 4 pi] 

v is an element of the number set [0.001, 1] 
Maeder's Owl is a semiopen figure, so the domain of v can be changed in the plugin.
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