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Mathematics
Pacciu
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I used to be a good Maths student. Then I took a PhD in Mathematics... Now I teach Maths to Italian high-schoolers (9th and 10th grade).

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27 A double series yielding Riemann's $\zeta$ Mar 22 '11
23 Bijection between an open and a closed interval Mar 22 '11
19 Self-Contained Proof that $\sum\limits_{n=1}^{\infty} \frac1{n^p}$ Converges for $p > 1$ Mar 28 '11
17 Find the spectrum of the linear operator $T: \ell^2 \to \ell^2$ defined by $Tx=(\theta x_{n-1} +(1-\theta)x_{n+1})_{n\in \mathbb{Z}}$ Mar 27 '11
16 Anecdotes about famous mathematicians or physicists Mar 25 '11
15 How to compute the first eigenvalue of Laplace operator in an ellipse? Mar 22 '11
12 Analytic in $\mathbb{C}$ implies $\left|\frac{f'(x)}{f(x)}\right|$ is bounded in $\mathbb{R}$? Mar 8 '12
11 Why $(-2)^{2.5}$ isn't equal to $((-2)^{25})^{1/10}$? May 8 '19
11 How to show that a linear map is surjective? Apr 10 '11
10 Problem 7 - Chapter 6 - Evans' PDE (Second Edition) Dec 26 '11
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