查看“︁∂”︁的源代码

[[数学符号表|数学符号]]'''∂'''（[[HTML元素]]：'''&amp;#8706;''' 或 '''&amp;part;'''，[[Unicode]]: U+2202）或'''<math>\partial</math>'''是''[[微分算子|d]]''的一种变体，主要用于表示[[偏导数]]，例如 <math>\frac{\partial z}{\partial x}</math>（读作“''z''对''x''的偏导数”）<ref>{{Cite book|url=https://www.worldcat.org/oclc/872345701|title=Calculus : a complete course|last=Christopher|first=Essex|publisher=|year=2013|isbn=9780321781079|location=|pages=682|oclc=872345701}}</ref>。

== 总览 ==
这一符号于1786年由[[阿德里安-马里·勒让德|勒让德]]首次引入，但直到1841年[[卡尔·雅可比|雅可比]]的使用才使得它真正开始流行起来<ref>Adrien-Marie Legendre, "Memoire sur la manière de distinguer les maxima des minima dans le Calcul des Variations," ''Histoire de l'Academie Royale des Sciences'' (1786), pp. 7–37.</ref><ref>Carl Gustav Jacob Jacobi, "De determinantibus Functionalibus," ''[[Crelle's Journal]]'' '''22''' (1841), pp. 319–352.</ref><ref>{{cite web|url=http://jeff560.tripod.com/calculus.html|author=Aldrich, John|title=Earliest Uses of Symbols of Calculus|accessdate=16 January 2014|archive-date=2015-05-01|archive-url=https://web.archive.org/web/20150501123549/http://jeff560.tripod.com/calculus.html|dead-url=no}}</ref>。

'''∂''' 也被用于表达以下含义：
* [[雅可比矩阵]]，<math>\frac{\partial(x, y, z)}{\partial(u, v, w)}</math>
* [[拓扑学]]中一个集的[[边界 (拓扑学)|边界]]
* [[同调代数]]中[[链复形]]的边缘算子
* {{link-en|微分分级代数|Differential graded algebra|微分分级代数}}中的边缘算子
* [[复微分形式]]中的{{link-en|杜比尔特算子|Dolbeault operator|杜比尔特算子}}
* [[西里尔字母]]“[[д]]”两种手写体的其中一种
这一符号在英语中可以读作“del”<ref>{{Citation |first=R.S. |last=Bhardwaj |year=2005 |title=Mathematics for Economics & Business |edition=2nd |page=6.4 |url=https://books.google.com/books?id=qSlGMwpNueoC&lpg=SA6-PA4&pg=SA6-PA4}}</ref>，“dee”<ref>{{Citation |first=Richard A. |last=Silverman |year=1989 |title=Essential Calculus: With Applications |page=216 |url=https://books.google.com/books?id=CQ-kqE9Yo9YC&lpg=PA216&pg=PA216}}</ref>，“partial dee”<ref>{{Citation |first=Malcolm |last=Pemberton |first2=Nicholas |last2=Rau |year=2011 |title=Mathematics for Economists: An Introductory Textbook |page=271 |url=https://books.google.com/books?id=H92Z6yfhxk8C&lpg=PA271&pg=PA271}}</ref>，“partial”（专用于[[LaTeX]]），“curly dee”<ref>{{Citation |first=Elizabeth |last=Bowman |year=2014 |title=Video Lecture for University of Alabama in Huntsville |url=https://www.youtube.com/watch?v=I0AVgBgHhUg |accessdate=2016-03-08 |archive-date=2021-11-25 |archive-url=https://web.archive.org/web/20211125215254/https://www.youtube.com/watch?v=I0AVgBgHhUg |dead-url=no }}</ref>，或“dabba”<ref>Gokhale, Mujumdar, Kulkarni, Singh, Atal, ''Engineering Mathematics I'', [https://books.google.co.uk/books?id=CbIqX6TxJVMC&pg=SA10-PA2 p. 10.2] {{Wayback|url=https://books.google.co.uk/books?id=CbIqX6TxJVMC&pg=SA10-PA2 |date=20211009070757 }}, Nirali Prakashan ISBN 8190693549.</ref>，中文一般读作「偏」。

== 参阅 ==
*字母[[Δ]]
*[[数学符号表]]

==参考文献==
{{Wiktionary}}
{{Reflist|2}}

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[[Category:数学术语]]