User robjohn - MathOverflow Meta

robjohn

Member for 8 years, 7 months
Last seen more than a month ago

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West Hills, CA

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About

The Mean Square
(with one standard deviation and several unusual ones)

aka Rob Johnson

$\LaTeX$ support for Chat

ChatJax installer

Some of my astrophotos

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Yearling

Jul 30, 2016

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Apr 12, 2021
Autobiographer

Oct 27, 2014

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618

How to prove that $\lim\limits_{x\to0}\frac{\sin x}x=1$?

175

What's 4 times more likely than 80%?

150

Slice of pizza with no crust

139

How to prove that $\frac{\zeta(2) }{2}+\frac{\zeta (4)}{2^3}+\frac{\zeta (6)}{2^5}+\frac{\zeta (8)}{2^7}+\cdots=1$?

127

Parabola is an ellipse, but with one focal point at infinity