4-gradient: Difference between revisions

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<center><math>\mathbf \partial_\mu \equiv[\frac{\partial}{\partial t}\ \frac{\partial}{\partial x}</math></center>
<center><math>\mathbf \partial_\mu \equiv[\frac{\partial}{\partial t}\ \frac{\partial}{\partial x}\ \frac{\partial}{\partial y}\ \frac{\partial}{\partial z}]=[\frac{\partial}{\partial x}\ \frac{\partial}{\partial x}\ \frac{\partial}{\partial x}\ \frac{\partial}{\partial x}]</math></center>

Revision as of 23:44, 9 July 2017

[math]\displaystyle{ \nabla_i=\frac{\partial}{\partial r_i}=\partial_i }[/math]


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