Nick Thompson
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### Answers (79)

 52 What do mathematicians mean by “equipped” 10 Why doesn't $d(x_n,x_{n+1})\rightarrow 0$ as $n\rightarrow\infty$ imply ${x_n}$ is Cauchy? 5 Solve $xy(1+xy^2)\frac {dy}{dx}=1$ 5 Gauss Seidel Method - How do I avoid calculating $L^{-1}$? 4 Is it true that $\|M(I-M)^{-1}\|_{\infty} \leq \frac{\|M\|_{\infty}}{1-\|M\|_{\infty}}\,?$

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### Questions (11)

 7 Orthogonal projections with $\sum P_i =I$, proving that $i\ne j \Rightarrow P_{j}P_{i}=0$ 4 Mellin transform defined for function on group $(\mathbb{R}^{+}, \times)$ 4 $\sum_{n=0}^{\infty} \frac{1}{2n+1} = 0.66215 + \frac{1}{2}\log(\infty)^{3}$ 4 $A, B$ sparse imply $AB$ is sparse? 3 Evaluation of Painful Integral:

### Tags (85)

 54 hilbert-spaces × 3 18 numerical-methods × 8 53 terminology × 2 16 linear-algebra × 8 52 notation × 2 16 sequences-and-series × 6 52 vector-spaces 15 matrices × 6 25 differential-equations × 14 11 integration × 9

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### Votes Cast (196)

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