Petty science question

[Black Sheep]

I m sorry, i have asked the world about this with no success...
btw i propose a sticky for Petty science questions.


Lipschitz Continuity and Riemann Sums

Theorem H.3 [Riemann Sums & Lipschitz Functions] Suppose f(x) is defined on an interval [a,b] and differentiable when a < x < b. Further suppose for some K > 0 that
|f(x2)-f(x1)| £ K·|x2-x1| whenever x1 and x2 are both in the interval [a,b].
What the HELL does stand the £ stand for!?
source (http://whyslopes.com/etc/Real-Analysis-Decimal-View/appH1_LIpshitz-Continuity-Integration.html)

[TheCagedLion]

If you are asking in the context of this Theorem, I have no idea.

But usually the sign means that the first expression is less than or equal to the second.

It can apparently also mean more than this, according to http://en.wikipedia.org/wiki/Table_of_mathematical_symbols

[revolution inaction]

I m sorry, i have asked the world about this with no success...
btw i propose a sticky for Petty science questions.
What the HELL does stand the £ stand for!?
source (http://whyslopes.com/etc/Real-Analysis-Decimal-View/appH1_LIpshitz-Continuity-Integration.html)

less then or equal to

[RebelDog]

Pounds Sterling. I'm sorry, but it appears your bankrupt.

[Black Sheep]

If you are asking in the context of this Theorem, I have no idea.

But usually the sign means that the first expression is less than or equal to the second.

It can apparently also mean more than this, according to http://en.wikipedia.org/wiki/Table_of_mathematical_symbols
Thanks.
But it's not in the wiki symbols table.

[revolution inaction]

is it not the 5th one down? are you seeing the same symbol as me?

[Black Sheep]

:blink::blink::blink::blink::blink:
the fuck?
I'm seeing the wiki list as you posted it, but as for what I posted..
I posted the pound sign..
Do you see the Less than equal sign in the source link in the original post too?

[revolution inaction]

:blink::blink::blink::blink::blink:
the fuck?
I'm seeing the wiki list as you posted it, but as for what I posted..
I posted the pound sign..
Do you see the Less than equal sign in the source link in the original post too?

yes, i'm using firefox 3.5.8 on ubuntu, the character encoding is set to auto detect universal, and has selected western (windows-1252) for the source page and western (ISO-8859-1) for this thread.

[Black Sheep]

Another petty one.Can one tell me if and why:


?

[Rosa Lichtenstein]

Well a^-k = 1/(a^k)

So 2^-1 = 1/2; 2^-2 = 1/(2^2), etc.

May I ask what you are doing stumbling around in such a technical area if you do not know what the basic symbols mean?

------------------

Anyway, why is this thread not in the Research section?

[Black Sheep]

May i ask what you are doing stumbling around in such a technical area if you can't read?
It's a^k not a^(-k)
And the question is on the summation and the boundary values of k.

edit: but your rude remark made me see the relation of the k values.
solved.

[Rosa Lichtenstein]

Apparently you can't read since the variable associated with the left hand epsilon sign is negative -- varying from negative infinity to n -- whereas the one associated with the epsilon sign on the right varies from -n to infinity.

And I wasn't being rude, just puzzled why you were experiencing difficulties over such basic issues.