Author Topic: Ask Your Eris?  (Read 24443 times)

saint aini

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Ask Your Eris?
« Reply #150 on: May 10, 2005, 06:00:23 am »
fourier frequency analysis.

s-domain analysis and Laplace transforms use the complex plane to reduce difficult to solve differential equations to easier algebraic equations and then back again to the real plane for real answers.
Mary: Let me ask you something.
[Grabs his hand]
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John Preston: What's the point of your existence?
Mary: To feel. 'Cause you've never done it, you can never know it. But it's as vital as breath. And without it, without love, without anger, without sorrow, breath is just a clock... ticking.

Zurtok Khan

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Ask Your Eris?
« Reply #151 on: May 10, 2005, 09:29:15 am »
The Wart has character!
Resistance is Fertile.

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nurbldoff

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Ask Your Eris?
« Reply #152 on: May 11, 2005, 02:45:03 am »
I find it pointless to say that imaginary numbers are less real then "ordinary" numbers. They're not, they just got an unfortunate name. No numbers can "exist" any more than imaginary numbers in any sense, since all numbers are pure abstractions anyway. We're used to using  numbers day by day, to describe amounts and stuff, but that doesn't make them more "real" than words. Besides, numbers such as (non-LMNO) Pi can't even be represented finitely with digits, are they real? Pi can be defined as the relation between the circumference and the diameter of a perfect circle; does such a thing "exist"?

The important thing to remember about science is that it's really all just about making models; pictures of "reality". If imaginary numbers are a cool way to make a working model, why not use them? Because some people find them hard to grasp? :)
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« Reply #153 on: May 11, 2005, 04:11:48 am »
mmmmmmmm..... Pi........
Code: [Select]
/*******Formulas for Pi ***********/

***Leibnitz's Formula ***

PI/4 = 1/1 - 1/3 + 1/5 - 1/7 + ...

***Wallis Product ***

PI/2 = 2/1 * 2/3 * 4/3 * 4/5 * 6/5 * 6/7 * ...

***Lord Brouncker's Formula ***

4/PI = 1 +        1
           ----------------
           2 +     3^2
               ------------
               2 +   5^2
                  ---------
                  2 + 7^2 ...


For those who can never get enough Pi

http://www.math.com/tables/constants/pi.htm

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Re: Ask Your Eris?
« Reply #154 on: November 19, 2008, 03:53:29 am »
I can't believe I asked this!
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Harlequin

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Re: Ask Your Eris?
« Reply #155 on: November 26, 2008, 02:10:17 pm »
I find it pointless to say that imaginary numbers are less real then "ordinary" numbers. They're not, they just got an unfortunate name. No numbers can "exist" any more than imaginary numbers in any sense, since all numbers are pure abstractions anyway. We're used to using  numbers day by day, to describe amounts and stuff, but that doesn't make them more "real" than words. Besides, numbers such as (non-LMNO) Pi can't even be represented finitely with digits, are they real? Pi can be defined as the relation between the circumference and the diameter of a perfect circle; does such a thing "exist"?

The important thing to remember about science is that it's really all just about making models; pictures of "reality". If imaginary numbers are a cool way to make a working model, why not use them? Because some people find them hard to grasp? :)

But there is a difference between unreal and real numbers in the sense that real, positive numbers are observable. I can see that I have two apples in front of me; I don't see, for instance, that I have minus nine monkeys. Likewise, i, pi, infinity etc are conceptual rather than 'real'. Pi is a definite value, yes, but no-one can actually list all of it in any form other than a fraction - just the same as any other irrational number. i and infinity are very useful for mathematical working, and of course they have a very important place in maths and physics - but nevertheless, there is still a distinction between 'basic' numbers and these more advanced types.

Of course, 42 > Everything else.
After all, wasn't it Oscar Wilde who was arrested for sodomy? Sorry, I'm not quite sure why I said that...

Hoopla!

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Re: Ask Your Eris?
« Reply #156 on: November 26, 2008, 02:31:29 pm »
Is that possibly just learned perception though?
“Soon all of us will have special names” — Professor Brian O’Blivion

"Now's not the time to get silly, so wear your big boots and jump on the garbage clowns." — Bob Dylan?

"Do I contradict myself? Very well, then I contradict myself, I am large, I contain multitudes" — Walt Whitman

shadowfurry23

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Re: Ask Your Eris?
« Reply #157 on: November 26, 2008, 03:53:48 pm »
*recorpalizes Altoid Addict with all of his parts except that ugly mole on his left ass cheek*

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Re: Ask Your Eris?
« Reply #158 on: November 26, 2008, 03:59:40 pm »
I find it pointless to say that imaginary numbers are less real then "ordinary" numbers. They're not, they just got an unfortunate name. No numbers can "exist" any more than imaginary numbers in any sense, since all numbers are pure abstractions anyway. We're used to using  numbers day by day, to describe amounts and stuff, but that doesn't make them more "real" than words. Besides, numbers such as (non-LMNO) Pi can't even be represented finitely with digits, are they real? Pi can be defined as the relation between the circumference and the diameter of a perfect circle; does such a thing "exist"?

The important thing to remember about science is that it's really all just about making models; pictures of "reality". If imaginary numbers are a cool way to make a working model, why not use them? Because some people find them hard to grasp? :)

But there is a difference between unreal and real numbers in the sense that real, positive numbers are observable. I can see that I have two apples in front of me; I don't see, for instance, that I have minus nine monkeys. Likewise, i, pi, infinity etc are conceptual rather than 'real'. Pi is a definite value, yes, but no-one can actually list all of it in any form other than a fraction - just the same as any other irrational number. i and infinity are very useful for mathematical working, and of course they have a very important place in maths and physics - but nevertheless, there is still a distinction between 'basic' numbers and these more advanced types.

Of course, 42 > Everything else.

I think you might me laboring under a misconception.

You can see an apple and an apple in front of you. If you choose to label them with a quantitative identity based on a generalization, then you can do so... but its no less imaginary than Pi (Apple Pi at that!).

Apple and Apple = Apple and Apple because the two apples are probably not the same. They are likely different apples with different qualities, weight, flavor, bruises, worms...

Ironicly it was Crowly that said "'1+1' is truth and '1+1=2' is a lie". :fnord:
- I don't see race. I just see cars going around in a circle.

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