Is $\{\}$ equal to $\{ \{\} \}$?
56637
In naive set theory ∅ = {∅} = {{∅}}?
94741
Are all infinities equal?
73300
How do `>` and `>>` work?
31244
Is this a correct bijection between $(0,1]$ and $[0,1]$?
153355
Given $S \in B(Y^{*}, X^{*})$, does there exist $T\in B(X,Y)$ such that $S=T^{*}$?
135638
The difference between \e and ^[
26338
Does $1^{\infty}=e$ or $1^{\infty}=1$?
79011
If $(F:E)<\infty$, is it always true that $\operatorname{Aut}(F/E)\leq(F:E)?$
115295
Why are the two dot product definitions equal?
108084
Is it always true? $\left|A-B\right| \le \left|A\right| + \left|B\right|$
140260
Is $\int \frac{1}{2x} \, dx $ equal to $\frac{\ln|2x|}{2}+ C$ or $\frac{\ln|x|}{2}+ C$
57938
When do two functions become equal?
3387
Derivative of $f(x)=|x|$
5639
No \xrightrightarrow[a]{b}?
27742
What does "${-#*i}" != "$-" mean?
82097
If $A \succeq B$, is it true that $B^{-1} \succeq A^{-1}$?
26950
Is there a string that's hash is equal to itself?