Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

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**jk22****Member**- Registered: 2010-06-14
- Posts: 33

Hi all, I'm new to this forum,

suppose that by telepathy it could be found if the price would be lowered or increased, so that a stability on some domain can be found,

what will the effect of a rat running on the keyboard ? It could not be predicted by telepathy, and could induce chaos

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,272

Hi jk22;

You are not that new, I know you. I have heard of Eddington's monkey but the rat on the keyboard is new to me.

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **A number by itself is useful, but it is far more useful to know how accurate or certain that number is.**

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**George,Y****Member**- Registered: 2006-03-12
- Posts: 1,306

Hi jk

I am working on it

Still, I need to build probability knowledge, time series, wavelet analysis from scrach.

Quant is a tough job.

**X'(y-Xβ)=0**

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