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Maksim

Apparently, this user prefers to keep an air of mystery about them.

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8 Why does $\int_a^b f(x)h'(x) \, \mathrm{d}x=0$ imply that $f$ is constant? Feb 15 '19
8 An alternative proof of an application of Hahn-Banach Mar 11 '19
4 $c_0(N)$ is not dense in $c(N)$ for any norm. Mar 9 '19
3 Prove $ \sup\limits_{t \in A} |x(t) - y(t)|$ defines a metric for the space of bounded functions. Feb 9 '19
3 How to show that $\sum_{i=1}^\infty\frac{1}{i\cdot2^i}=\ln2$? Feb 10 '19
3 Show that $f_n \rightarrow 0$ in $C([0, 1], \mathbb{R})$ Dec 7 '18
2 Is $i: (C^1, ||·||_{W^{1,2}}) → (C^0, ||·||_∞)$ a linear, continuous, compact map? Jan 21 '19
2 Riemann/Lebesgue integrability of a function Jan 25 '19
2 Find all values $k$ such that the set $S = \{x^3+x+1, x^3−x^2+1, x^3+k x^2+k x\}$ is linearly independent in $P$ Feb 8 '19
2 $ \mu(|f|\geq \alpha) = \frac{1}{\alpha} ||f||_1$ Feb 14 '19
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