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Mathematics
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ale
  • Member for 8 years, 10 months
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16
Why is $l^\infty$ not separable?
Jan 9, 2016
7
$f:\mathbb R \to \mathbb R$ be differentiable such that $f(0)=0$ and $f'(x)>f(x),\forall x \in \mathbb R$ ; then is $f(x)>0,\forall x>0$?
Dec 15, 2015
5
Functional equation $f\left(\frac{1}{x}\right)+(x+1)f(x)=1$
Dec 7, 2015
5
Show that $\left(\int_{0}^{1}\sqrt{f(x)^2+g(x)^2}\ dx\right)^2 \geq \left(\int_{0}^{1} f(x)\ dx\right)^2 + \left(\int_{0}^{1} g(x)\ dx\right)^2$ [closed]
Jan 5, 2016
4
Show that $g$ and $h$ are constant functions. [duplicate]
Jun 14, 2020
4
Two-dimensional algebras over complex numbers
Oct 12, 2016
4
Prove that $\angle DIH=30^{\circ}$
Dec 8, 2022
4
Show that $b^2+c^2-a^2\leq bc$.
Dec 13, 2022
4
Let C be a self-dual binary code with parameters $[n,k,d].$
Mar 15, 2016
3
construct two sets $A$ and $B$ such that $|A| = C$, $|B| = \aleph_0$, but the intersection is finite
Dec 17, 2015