Is it true that $|\mathbb{R}|=2^\omega=\omega_1$?
43598
Do $\omega^\omega=2^{\aleph_0}=\aleph_1$?
38221
What is wrong with this proof there is no $\omega$-th worldly cardinal
42849
Is it true that $\omega=\{0,1,2,3,\ldots\}$ in ZFC?
108642
$e^A$, where $A= \begin{bmatrix} 0 & \omega \\ -\omega& 0 \end{bmatrix}$
6227
Showing diffeomorphism between $S^1 \subset \mathbb{R}^2$ and $\mathbb{RP}^1$
63590
Let $g$ be a function from $(0, 1)$ to $\mathbb{R}$ and $\int_0^1 g^2(x)dx$ finite. Does this imply that $\int_0^1 g(x)dx$ is finite?
157187
Why $\omega+1$ and $\omega^2$ are not cardinal numbers?
39646
Is there a relation between $\rho(A) + \rho(B)$ and $\rho(A+B)$, where $\rho$ is the spectral radius?
79711
How to show $\omega^n$ is a volume form in a symplectic manifold $(M, \omega)$?
83185
How to show countability of $\omega^\omega$ or $\epsilon_0$ in ZF?
101448
Is $\sin^2(z) + \cos^2(z)=1$ still true for $z \in \Bbb{C}$?
41385
$\nabla U=0 \implies U=\mathrm{constant}$ only if $U$ is defined on a connected set?
113970
Compute $\int_cd\omega$ and $\int_{\partial c}\omega$
148927
Why does every countable limit ordinal have cofinality $\omega$?
90845
Is this posible in GR $g_{ab}g^{ab}=1$?
112179
Why don't the results of testing $H_0 : \beta = 0$ and $H_0 : {\rm cor}(X,Y)=0$ agree?
124164
($n$-dimensional) Inverse Fourier transform of $\frac{1}{\| \mathbf{\omega} \|^{2\alpha}}$