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∂ : ウィキペディア英語版


The character ∂ (html element: ∂ or ∂, unicode: U+2202) or \partial is a stylized ''d'' mainly used as a mathematical symbol to denote a partial derivative such as \frac (read as "the partial derivative of ''z'' with respect to ''x''"). The symbol was originally introduced by Legendre in 1786, but only gained popularity when it was used by Jacobi in 1841.〔(【引用サイトリンク】author=Aldrich, John )
∂ is also used to denote the following:
* The Jacobian, \frac.
* The boundary of a set in topology.
* The boundary operator on a chain complex in homological algebra.
* The boundary operator of a differential graded algebra.
* The Dolbeault operator on complex differential forms.
The symbol may be referred to as "del", "dee", "partial dee", "partial", "curly dee", or "dabba".〔Gokhale, Mujumdar, Kulkarni, Singh, Atal, ''Engineering Mathematics I'', (p. 10.2 ), Nirali Prakashan ISBN 8190693549.〕
==References==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「∂」の詳細全文を読む



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