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Complex lamellar vector field : ウィキペディア英語版
Complex lamellar vector field
In vector calculus, a complex lamellar vector field is a vector field in three dimensions which is orthogonal to its own curl. That is,
:\mathbf\cdot (\nabla\times \mathbf) = 0.
Complex lamellar vector fields are precisely those that are normal to a family of surfaces. A special case are irrotational vector fields, satisfying
:\nabla\times\mathbf=\mathbf.
An irrotational vector field is locally the gradient of a function, and is therefore orthogonal to the family of level surfaces (the equipotential surfaces). Accordingly, the term lamellar vector field is sometimes used as a synonym for an irrotational vector field.
The adjective "lamellar" derives from the noun "lamella", which means a thin layer. The ''lamellae'' to which "lamellar flow" refers are the surfaces of constant potential, or in the complex case, the surfaces orthogonal to the vector field.
==See also==

* Beltrami vector field
* Conservative vector field

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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