Is $ d(U,V) = 0 $? True/false
39293
Given a compact set $K$ and closed set $E,$ prove: $E\cap K\neq \emptyset $
1162
Why $\{\mathbf{0}\}$ has dimension zero?
41385
$\nabla U=0 \implies U=\mathrm{constant}$ only if $U$ is defined on a connected set?
16375
Is the function differentiable at $0$?
14576
$(U\cap W)^0 = U^0 + W^0$
13829
PDE list of equations, derivative for boundarry condition evaluates to true
106038
Burgers' equation $u_y + uu_x = 0$ with $u(x,0)=-x$
88311
Linear functional f(v)=0 imply v=0
49073
how to obtain solution for $u_t+u=u_{xx}$
41173
If $f\in S_\infty$ and $\int_{\mathbb{R}}x^pf(x)d\mu=0$ for all $p\in\mathbb{N}$ then $f\equiv 0$?
12092
When can one write $a=v \cdot dv/dx$?
151958
How to show $f'(0)$ exist and is equal to $1$?
51483
Prove: If a linear map, $φ: U→V$ is bijective, then $φ(x)=0$ has only the solution $x=0$.
62140
Direction of $d\mathbf{l}$
85
Difference between $\Delta$, $d$ and $\delta$
45370
Is it true that $|d(x, z) - d(y, z)| \leq d(x, y)$ and how do I prove it?
2105
$\langle Tu\;|\;u\rangle=0,\;\forall u\in E \Longrightarrow T=0$?