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#1 2013-08-09 03:36:27

Al-Allo
Member
Registered: 2012-08-23
Posts: 294

mathematical symbol

Can somebody tell me what is the meaning of this symbol :


Is it approximation ?

Last edited by Al-Allo (2013-08-09 03:36:44)

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#2 2013-08-09 03:43:16

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,687

Re: mathematical symbol

Hi;

That means asymptotically equal to. Sometimes I see ~ meaning the same thing.

≈ means approximately.

http://en.wikipedia.org/wiki/%E2%89%88

Even better:

http://en.wikipedia.org/wiki/Unicode_ma … _operators


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#3 2013-08-09 03:52:32

Al-Allo
Member
Registered: 2012-08-23
Posts: 294

Re: mathematical symbol

Thank you, even if I have no idea what It means xD But thanks again

Last edited by Al-Allo (2013-08-09 03:52:47)

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#4 2013-08-09 03:57:46

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,687

Re: mathematical symbol

It describes a limiting factor for instance

Stirlings approximation:

or

This means that as n approaches infinity the approximation on the right ( Stirling's ) gets better and better. ( loosely stated )


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#5 2013-08-09 04:00:07

Al-Allo
Member
Registered: 2012-08-23
Posts: 294

Re: mathematical symbol

Ahh, never seen this topic ... Anyway, Ill return to it another time. By the way, could you go see my topic in exercices please ??? thanks

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#6 2013-08-09 04:02:56

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,687

Re: mathematical symbol

This is more usually discussed in Numerical analysis and is not covered in the standard curriculum. Please understand to actually describe what that symbol means I would have to go into absolute error, relative error and actual error. Since it is not necessary for this discussion I stated it not very rigorously.


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#7 2013-08-09 04:04:56

Al-Allo
Member
Registered: 2012-08-23
Posts: 294

Re: mathematical symbol

It's ok, I won't bite you. I'll just return to it when I know more about those things.

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#8 2013-08-09 04:11:53

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,687

Re: mathematical symbol

Hi;

Those cyber bites can hurt.

I did not want to confuse you with lots of jargon when it could be explained simply at the price of a little rigor.


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

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