Squiggle arrow... what is it?

**GordonComstock** · March 24th 2011, 05:53 AM

Hi. I've met a symbol like this: File:U+21DC.gif - Wikipedia, the free encyclopedia in an equation, at the end of it. In that equation, it was downwards. What is it used for? Thanks!

**TheChaz** · March 24th 2011, 06:02 AM

What was the equation? It might be a contradiction...
Contradiction - Wikipedia, the free encyclopedia
(see heading "Symbolic representation")

Without more context, I'm just shootin in the dark!

**GordonComstock** · March 24th 2011, 06:36 AM

Thank you for your answer, I'll scan it later and post the image of it.

**GordonComstock** · March 24th 2011, 07:03 AM

$g(r)=p_k\left [ \frac{nr(1+r)^n}{(1+r)^n-1} -1 \Downarrow \ \right ]$

Where I've put $\Downarrow$ , there is that squiggle arrow.

The function in square brackets is monotonically increasing function of r.
Thanks again.

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