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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: 86,666

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.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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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: 86,666

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.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#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: 86,666

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.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#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: 86,666

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.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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