Verify that the unbounded function belongs to $W^{1,n}$
99821
Show that $u(x)=\ln\left(\ln\left(1+\frac{1}{|x|}\right)\right)$ is in $W^{1,n}(U)$, where $U=B(0,1)\subset\mathbb{R}^n$.
132957
Prove that the derivative of $x^w$ is $w x^{w-1}$ for real $w$
125925
Convergence of $f_n(x)=x^n(1-x)^n$
107842
Behaviour of ($\overline{a}_n)_{n=1}^{\infty}$ and ($\underline{a}_n)_{n=1}^{\infty}$
13506
Can an unbounded function have a finite integral?
9748
Maximum modulus principle for an unbounded function in the half right plane
32965
Proving that for infinite $\kappa$, $|[\kappa]^\lambda|=\kappa^\lambda$
56958
bounding a $C^1$ function that upholds $f'(t)\leq 1-f(t)^2$
147590
If $L$ is regular, prove that $\sqrt{L}=\left\{ w : ww\in L\right\}$ is regular
151175
Unbounded range()
38185
Prove that $\{\cos(nx) : n=1, ... ,\infty \}$ is bounded but not totally bounded in $C([0,\pi])$
72908
Bounding a strange function
74145
How to prove $x^{n}$ is not uniformly continuous
128766
Show that the set of functions $\mathbb{N}\to\{0,1\}$ is not countable
98282
Prove that the function $\xi\in R \mapsto {e^{i\cdot \xi\cdot λ}-1\over i\cdot \xi}-λ$ is $C^{\infty}$
113340
Show that the recursive sequence is bounded
156335
Proving Power Set of $\mathbb N$ is Uncountable