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Old 2009-08-31, 03:40   #12
CRGreathouse
 
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Here's the Ramsey theory version:
\pi<10^{10^{10^{963}}}
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Old 2009-08-31, 07:43   #13
henryzz
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Perfect for solving quadratic equations:

\huge\frac{-b \pm \sqrt {b^2-4ac}}{2a}
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Old 2009-08-31, 07:48   #14
Kees
 
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V-E+F=2
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Old 2009-08-31, 09:12   #15
Raman
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Noticed this thread.

Why not allow permanent edit feature to our own posts forever? I don't bother to moderate others' posts. But, what justice is it if we can't edit our own posts after 1 hour from the time of posting? Perhaps, that it is a feature of vBulletin, I would talk about that later on.

Quote:
Originally Posted by Xyzzy
1. Post an interesting math snippet, using the forum's math rendering engine.
A magic square with all the entries being prime numbers!

<br />
\huge \begin{bmatrix} 17 & 113 & 47 \\ 89 & 59 & 29 \\ 71 & 5 & 101 \end{bmatrix}<br />

Last fiddled with by Raman on 2009-08-31 at 09:33
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Old 2009-08-31, 13:12   #16
Mini-Geek
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\pi(x) \approx \frac{x}{ln(x) - 1}
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Old 2009-08-31, 16:14   #17
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<br />
\frac{1}{\pi} = \frac{sqrt{8}}{9801}\sum_{n=0}^{\infty}\frac{(4n)!(1103+26390n)}{({n!})^4 396^{4n}}<br />
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Old 2009-08-31, 16:41   #18
fivemack
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\exp(\pi \sqrt{58}) \approx f(396^{-4}) \! \mathrm{where} \! f(u) = u^{-1} - 104 - 4372u - 550944u^2

(I believe this is related to the previous statement ...)

Last fiddled with by fivemack on 2009-08-31 at 16:41
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Old 2009-08-31, 20:08   #19
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\int e^x = f(u,n)
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Old 2009-08-31, 20:30   #20
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Traditional Caltech sports cheer: e^ududx, pronounced: "e to the u dee u dee x!"
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Old 2009-09-01, 15:50   #21
lycorn
 
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Another contribution from Euler:

\pi^2/6=\sum_{n=1}^\infty^1/n^2

Last fiddled with by lycorn on 2009-09-01 at 15:51
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Old 2009-09-01, 19:50   #22
Jeff Gilchrist
 
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The last part of my secret proof. It is true, I swear. Trust me...

\therefore P=NP
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