Express $\forall n \in \mathbb N$, $\exists m \in \mathbb N$, $n^4 = m^2$ in words without using the symbol $\mathbb N$
99929
express in words without using the symbol N
68449
$\operatorname{Supp}(M)=V(\operatorname{Ann}M)$ if $M$ is finitely generated
24561
$\mathbb S_n$ as semidirect product
42883
Cross product in $\mathbb R^n$
77957
How is $\mathbb N$ actually defined?
136933
Which $n$ can be expressed as $x^2 − y^2$?
28942
About Math notation: the set of the first $n$ natural numbers
151354
Why are there no non-trivial regular maps $\mathbb{P}^n \to \mathbb{P}^m$ when $n > m$?
155266
Is $\exp:\overline{\mathbb{M}}_n\to\mathbb{M}_n$ injective?
5577
If $m$ divides $n$, find a free resolution of $\mathbb{Z}/m$ as a $\mathbb{Z}/n$-module.
123698
Can $2^k + 2^j$ be expressed as $2^n$?
14581
How do we prove $n^n \mid m^m \Rightarrow n \mid m$?
64140
Find a bijection from $\mathbb R$ to $\mathbb R-\mathbb N$
27544
With $a,\ b,\ m,\ n\in \mathbb{Z}$. Show that if ${\rm gcd}(m,n)=1$, then ${\rm gcd}(ma+nb,mn)={\rm gcd}(a,n){\rm gcd}(b,m)$
70861
$\mathbb P^n\times \mathbb P^m\not\cong \mathbb P^{m+n}$
49166
$R^n \cong R^m$ iff $n=m$
3500
Compositeness of $n^4+4^n$