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

You are not logged in.

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

Al-Allo
Member
Registered: 2012-08-23
Posts: 324

### 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)

Offline

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

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

### 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.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline

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

Al-Allo
Member
Registered: 2012-08-23
Posts: 324

### 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)

Offline

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

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

### 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.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline

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

Al-Allo
Member
Registered: 2012-08-23
Posts: 324

### 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

Offline

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

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

### 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.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline

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

Al-Allo
Member
Registered: 2012-08-23
Posts: 324

### Re: mathematical symbol

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

Offline

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

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

### 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.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline