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#1 2013-08-10 01:36:27

Al-Allo
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mathematical symbol

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

Is it approximation ?

Last edited by Al-Allo (2013-08-10 01:36:44)

#2 2013-08-10 01:43:16

bobbym

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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 have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#3 2013-08-10 01:52:32

Al-Allo
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Re: mathematical symbol

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

Last edited by Al-Allo (2013-08-10 01:52:47)

#4 2013-08-10 01:57:46

bobbym

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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 have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#5 2013-08-10 02:00:07

Al-Allo
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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

#6 2013-08-10 02:02:56

bobbym

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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 have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#7 2013-08-10 02:04:56

Al-Allo
Full Member

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Re: mathematical symbol

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

#8 2013-08-10 02:11:53

bobbym

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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 have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.