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David Tan

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visits member for 7 months
seen Mar 12 at 22:57
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53 reputation
 bio website visits member for 7 months
4 badges
 location seen Mar 12 at 22:57
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5 Questions

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5
 Why $\frac{X+YZ}{\sqrt{1+Z^2}} \sim \mathcal{N}(0,1)$ if $X,Y,Z$ are i.i.d. $\mathcal{N}(0,1)$?
2
 Kolmogorov complexity of $n$
1
 Why is $\bigcup_{n=1}^{\infty} [a+\frac{1}{n},b-\frac{1}{n} ]=(a,b)$?
1
 Count number of 1's in $\textbf{u}\textbf{v}^T$
1
 A question about $\sum_{i=1}^n x_i x_i^T = X^TX$

53 Reputation

+10 Kolmogorov complexity of $n$
+5 Why is $\bigcup_{n=1}^{\infty} [a+\frac{1}{n},b-\frac{1}{n} ]=(a,b)$?
+25 Why $\frac{X+YZ}{\sqrt{1+Z^2}} \sim \mathcal{N}(0,1)$ if $X,Y,Z$ are i.i.d. $\mathcal{N}(0,1)$?
+5 Count number of 1's in $\textbf{u}\textbf{v}^T$
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0 Answers

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6 Tags

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probability × 2
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statistics
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elementary-set-theory
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linear-algebra
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real-analysis
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matlab

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Mathematics Stack Exchange Mathematics 53 rep 4
Stack Overflow Stack Overflow 31 rep 2
Cross Validated Cross Validated 1 rep
TeX - LaTeX Stack Exchange TeX - LaTeX 1 rep
English Language & Usage Stack Exchange English Language & Usage 1 rep
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