[back]  3.18. Whitney Umbrella 
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The Whitney Umbrella [ 6,11,18 ] is represented by the following equations.
x = uv 
368 

y = u 
369 

z = ^{v2} 
370 
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 [1.5, 1.5] 

v is an element from the set of numbers [1.5, 1.5] 
The Whitney Umbrella is an open figure, so the definition range can be changed in the plugin.
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