# cactuar

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bio website reddit.com/r/… location meatspace age member for 2 years, 9 months seen Dec 4 at 3:52 profile views 1,115

when someone smiles at me, all I see is an ape bearing its teethe

# 112 Questions

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### The geometric intuition behind the fact that $y-x^3=0$ in $\mathbb{P}^2(\mathbb{R})$ has a singularity at infinity

dec 2 '12 at 9:08 Community 1
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### $\int_{\gamma}\frac{dz}{\sqrt{1-z^2}}=2\pi$ Along the path $\gamma(t)=2e^{it}$ for $0\leq t\leq 2\pi$ Implies Sine is $2\pi$ periodic

oct 12 '12 at 4:52 cactuar 1,690

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### Help proving that $\frac{2}{n+\frac{1}{2}} \leq \int_{\frac{1}{n+1}}^{\frac{1}{n}}\sqrt{1+(\sin(\frac{\pi}{t}) -\frac{1}{t}\cos(\frac{\pi}{t}))^2}dt$

jul 11 '12 at 20:17 cactuar 1,690
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