Why does $\textbf{F}=- \boldsymbol{\nabla} V$?
131958
Why is the potential energy equal to the negative integral of a force?
1045
Why is this vector field curl-free?
70028
Direct way of calculating $\mathbb{E} \left[ \frac{\textbf{h}^{H} \textbf{y}\textbf{y}^{H} \textbf{h}}{ \| \textbf{y} \|^{4} } \right]$
1162
Why $\{\mathbf{0}\}$ has dimension zero?
100184
physical meaning of the vector $(A \cdot \nabla) A$
121666
How do I apply both \mathbf and \left to a \langle?
123220
Quick doubt about multiplying vectors by scalars
69324
The Gradient as a Row vs. Column Vector
14830
A transformation of F[x]
4443
Why is the determinant zero iff the column vectors are linearly dependent?
36072
Problem with the \mathbf command
152916
What is the gradient with respect to a vector $\mathbf x$?
59125
Why does this matrix give the derivative of a function?
142821
Why?$\int_0^1\int_{u(t)}^{u(t)+w(t)} f(t,v(t)) dv dt = \int_0^1 f(t,u(t)+\theta w(t))w(t) dt; ~~\theta\in[0,1] $
147876
Find $F$-related vector fields on $M\times N$, where $F(x)=(x, f(x))$
123911
Why is the derivative of a vector orthogonal to the vector itself?
124194
$R>r>0$ , $||a||,||b||R$ ; pulls back volume form to itself?