4-gradient

From New IAC Wiki
Revision as of 23:48, 9 July 2017 by Vanwdani (talk | contribs)
Jump to navigation Jump to search
[math]\nabla_i=\frac{\partial}{\partial r_i}=\partial_i[/math]


[math]\mathbf \partial_\mu \equiv \Biggl [ \frac{\partial}{\partial t}\quad \frac{\partial}{\partial x}\quad \frac{\partial}{\partial y}\quad \frac{\partial}{\partial z}\Biggr ]=\Biggl [\frac{\partial}{\partial x}\quad \frac{\partial}{\partial x}\quad \frac{\partial}{\partial x}\quad \frac{\partial}{\partial x}\Biggr ][/math]