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# 140 Questions

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### How to show that $u_l(0)= \frac{1}{\sqrt{2}}$, $u_l(1)= \frac{1}{\sqrt{2}}$ and $u_l(n)= 0$ for $2 \leq n \leq (\frac{N}{2^{l-1}}-1$ $\dots$

dec 30 '10 at 18:37 Arturo Magidin 214k
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### How to find such $f(n)$, that satisfies $f(n) \equiv x_n \pmod{ 12}$, where $x_n$ is 12-periodic sequence?

jul 27 '13 at 12:32 alvoutila 1,354

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### Is always $\mathbb{D} \subset U$ in Poisson's integral formula?

apr 6 '13 at 21:56 Davide Giraudo 102k
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### Why outer measure is defined by $m_n^*(A)=\inf \bigg\{ \sum_{i=1}^\infty l(I_i):\mathbb{F}=\{I_1,I_2,… \}\mbox{ is Lebesgue cover of } A \bigg\}$?

jan 23 '13 at 16:35 Sasha 54.8k

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