What does the symbol nabla indicate? - Mathematics Stack …
Mar 27, 2018 · First up, this question differs from the other ones on this site as I would like to know the isolated meaning of nabla if that makes sense. Meanwhile, other questions might ask …
differential geometry - Coordinate free definition of $\nabla
Jul 21, 2018 · The problem is that it only address the use of $\nabla$ in its function in taking the gradient. It is a satisfactory coordinate independent definition of $\nabla f$ but it isn't a …
Vector triple product with $\nabla$ operator - Physics Stack …
Oct 2, 2024 · Since the del operator, $\boldsymbol {\nabla}$, appears in the triple product, the normal $\text {BAC-CAB}$ vectorial rule for triple products cannot be applied directly.
Del. $\\partial, \\delta, \\nabla $: Correct enunciation
$\nabla$: Called Nabla or del. This has four different uses, which can be easily distinguished while reading out loud, but it gets confusing when the first and last uses (grad and covariant …
calculus - Difference between $\nabla T$ and $\nabla \cdot E ...
Apr 26, 2015 · Difference between $\nabla T$ and $\nabla \cdot E$ Ask Question Asked 10 years, 8 months ago Modified 10 years, 7 months ago
vectors - Proof of $\nabla\times (\nabla\times \mathbf f)=\nabla ...
Oct 17, 2019 · To give an example, in the derivation of the wave equation from maxwell's equations, the following identity is used: $$ \nabla\times (\nabla\times \mathbf f)=\nabla …
Difference between the $\\nabla\\cdot a$ and $a\\cdot\\nabla$
Feb 9, 2019 · you shall take the proper orientation for the vectors (column/row) and the proper convention on how the operator $\nabla$ will apply to vectors on the left or on the right.
Is $\nabla$ a vector? - Mathematics Stack Exchange
Nov 19, 2014 · Cross product: $\nabla \times (Vector)=Vector$ From the above equation of cross product we can say that $\nabla$ is a vector (specifically vector operator). However, a vector …
Where does the relation $\nabla^2 (1/r)=-4\pi\delta^3 ( {\bf r ...
It is often quoted in physics textbooks for finding the electric potential using Green's function that $$\nabla ^2 \left (\frac {1} {r}\right)=-4\pi\delta^3 ( {\bf r}),$$ or more generally $$\nabl...
A rigorous proof that $\nabla \cdot E = \frac {\rho} {\epsilon_0}$
Mar 26, 2021 · Edit: I think a key insight I was missing is that proving (1) is equivalent to showing that $$ \tag {2} \text {if} \quad \varphi (x) = -\frac {1} {4 \pi \epsilon_0} \int_ {\mathbb R^3} \rho …