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・ Lidija Liepiņa
・ Lidija Manić
・ Lidija Meškaitytė
・ Lidija Mihajlović
・ Lidija Osterc
・ Lidija Turčinović
・ Lidija Vukićević
・ Lidija Vučković
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・ Lidingö SK
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Lidinoid
・ Lidio Rainaldi
・ Lidiya
・ Lidiya Alekseyeva
・ Lidiya Alfeyeva
・ Lidiya Fedoseyeva-Shukshina
・ Lidiya Ginzburg
・ Lidiya Glubokova
・ Lidiya Grigoryeva
・ Lidiya Ivanova
・ Lidiya Ivanova (gymnast)
・ Lidiya Ivanova (journalist)
・ Lidiya Karamchakova
・ Lidiya Krylova
・ Lidiya Loginova


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Lidinoid : ウィキペディア英語版
Lidinoid

In differential geometry, the lidinoid is a triply periodic minimal surface. The name comes from its Swedish discoverer Sven Lidin (who called it the HG surface).
It has many similarities to the gyroid, and just as the gyroid is the unique embedded member of the associate family of the Schwarz P surface the lidinoid is the unique embedded member of the associate family of the Schwarz H surface. It belongs to space group 230(Ia3d).
The Lidinoid can be expressed as a level set:〔(The lidionoid in the Scientific Graphic Project )〕
:\begin
(1/2)(\cos(y)\sin(z)\\
+ &\sin(2y)\cos(z) \sin(x)\\
+ &\sin(2z)\cos(x) \sin(y)
)\\
-& (1/2)( + &\cos(2y)\cos(2z)\\
+ &\cos(2z)\cos(2x)
) + 0.15 = 0
\end

==References==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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