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DoomYoshi 22-10-2008 03:58 AM

Really Big Numbers
 
Today I wrote out every digit of 1000! However, the correct term for the result is four bagillion.

Does any else have any really big numbers they would like to share?

AlumiuN 22-10-2008 07:28 AM

A googleplex - one with (one with a million zeros) zeros.

Spoonman 22-10-2008 08:07 AM

42

what else?

AlumiuN 22-10-2008 09:01 AM

7

Play Marathon, you might notice it.

Luchsen 22-10-2008 09:31 AM

# 10 characters

Romano 22-10-2008 09:38 AM

Attachment 272 + 1

:whistling:

GTX2GvO 22-10-2008 10:58 AM

Quote:

Originally Posted by Romano (Post 340709)

I raise you with http://img380.imageshack.us/img380/5144/infinityco8.jpg + http://img380.imageshack.us/img380/5144/infinityco8.jpg

Tomekk 22-10-2008 11:01 AM

http://img380.imageshack.us/img380/5144/infinityco8.jpg multiplied by http://img380.imageshack.us/img380/5144/infinityco8.jpg

_r.u.s.s. 22-10-2008 11:10 AM

according to mathematics, the only person who was correct about the unlimited was tomekk
unlimited+1=still unlimited
unlimited+unlimited=still unlimited
unlimited*unlimited= unlimited of higher range

GTX2GvO 22-10-2008 11:15 AM

OK.. OK.. http://img380.imageshack.us/img380/5144/infinityco8.jpg ^ (to the power) http://img380.imageshack.us/img380/5144/infinityco8.jpg ==> http://img410.imageshack.us/img410/2...finity2on7.png

Romano 22-10-2008 11:57 AM

Let us try another way.

The conclusion is that the biggest number is 1

Lulu_Jane 22-10-2008 12:35 PM

I'm going to go with pi.

3.14159 ad infinitum

SlowCoder 22-10-2008 12:55 PM

Quote:

Originally Posted by Romano (Post 340721)
Let us try another way.

The conclusion is that the biggest number is 1

I remember watching some show years ago that tried to explain that mathematically speaking, a traveling object could never reach its destination, but could come infinitely close. The equation you're using is basically the outcome. Totally illogical to me, but maybe you're right in that sense, and 1 really is the biggest number.

_r.u.s.s. 22-10-2008 01:00 PM

Quote:

Originally Posted by Romano (Post 340721)
Let us try another way.

The conclusion is that the biggest number is 1

huh? the conclusion is that the biggest number is 3

3
:P

Japo 22-10-2008 05:33 PM

That's not really the way it works, infinity is neither a real nor a definite number.

By the way the total numbers of atoms in the whole universe has been estimated at around 1e80, so chances are that you won't need one bigger. :P

Quote:

Originally Posted by SlowCoder (Post 340726)
I remember watching some show years ago that tried to explain that mathematically speaking, a traveling object could never reach its destination, but could come infinitely close.

Not true, that paradox was solved centuries ago. That you divide a process in infinite steps does not imply that it will take an infinite amount of time, since an infinite number of amounts can add a finite amount:

http://en.wikipedia.org/wiki/Convergent_series

SlowCoder 22-10-2008 06:02 PM

Quote:

Originally Posted by Japofran (Post 340747)
Not true, that paradox was solved centuries ago. That you divide a process in infinite steps does not imply that it will take an infinite amount of time, since an infinite number of amounts can add a finite amount:

http://en.wikipedia.org/wiki/Convergent_series

:omg: Japo, Why are you tossing that stuff onto me? I can't read that gibberish! :)

I was a kid back then, so can't remember details. I just remember that they tried to explain mathematically that a ball thrown from a pitcher would never actually reach the catcher, because for each instance of time, the ball would only travel half as far as the previous time. I don't know how that's logical, or what the heck it has to do with baseball. It's confounded me to this day. :embarassed:

Japo 22-10-2008 07:56 PM

These kind of paradoxes were formulated by charlatan Zeno on the Vth century BC. The one I heard first was "Achilles and the tortoise":

Quote:

In the paradox of Achilles and the Tortoise, Achilles is in a footrace with the tortoise. Achilles allows the tortoise a head start of 100 feet. If we suppose that each racer starts running at some constant speed (one very fast and one very slow), then after some finite time, Achilles will have run 100 feet, bringing him to the tortoise's starting point. During this time, the tortoise has run a much shorter distance, for example 10 feet. It will then take Achilles some further time to run that distance, in which time the tortoise will have advanced farther; and then more time still to reach this third point, while the tortoise moves ahead. Thus, whenever Achilles reaches somewhere the tortoise has been, he still has farther to go.
But if you calculate the sum of that infinite amount of ever shorter time spans, the total is finite. Just the same that

1/2 + 1/4 + 1/8 + 1/16 + ... = 1

Even though there are infinite addends, they add up a finite amount.

DoomYoshi 22-10-2008 09:30 PM

Today I put 10 000! into my calculator which broke it... However, 2000! worked fine:nuts:

AlumiuN 23-10-2008 07:56 AM

Quote:

Originally Posted by Japofran (Post 340759)
These kind of paradoxes were formulated by charlatan Zeno on the Vth century BC. The one I heard first was "Achilles and the tortoise":



But if you calculate the sum of that infinite amount of ever shorter time spans, the total is finite. Just the same that

1/2 + 1/4 + 1/8 + 1/16 + ... = 1

Even though there are infinite addends, they add up a finite amount.

That's only theoretical -> e.g. 1 is the sum to infinity of that sequence. In what could be called 'practical terms' e.g. no theoretical numbers such as infinity, Achilles will never pass the tortoise. Of course, taking exact points in time for a continuous scale doesn't have any bearing in real life, but from the standpoint of conventional maths, 1 is never reached.

_r.u.s.s. 23-10-2008 11:53 AM

Quote:

Originally Posted by Japofran (Post 340747)
That's not really the way it works, infinity is neither a real nor a definite number.

well, it's a set, which has infinite ammount of numbers, so..

Japo 23-10-2008 04:18 PM

Quote:

Originally Posted by _r.u.s.s. (Post 340820)
well, it's a set, which has infinite ammount of numbers, so..

No, infinity isn't certainly a set, it's not the whole field of real numbers --and it's none of them either. Infinity could be thought of as a single number two numbers (plus and minus infinity, although with complex limits it's different), but it's actually a concept that appears only when talking about limits, so everybody misunderstands infinity as a mathematical concept or number.

Quote:

Originally Posted by AlumiuN (Post 340804)
That's only theoretical -> e.g. 1 is the sum to infinity of that sequence, just in one step. In what could be called 'practical terms' e.g. no theoretical numbers such as infinity, Achilles will never pass the tortoise. Of course, taking exact points in time for a continuous scale doesn't have any bearing in real life, but from the standpoint of conventional maths, 1 is never reached.

But it was you (or Zeno) who broke up whatever into infinite parts for no good reason. Everything can be broken up into infinite parts. You can be thought of as made up of infinite hypothetical parts, then it must mean that you cannot exist or that you cannot be contained or something stupid.

You can calculate how and when Achilles will pass the tortoise without contemplating any infinite sequence, just in one step. The fact is however that if you insist on calculating the time for each of the infinite time spans and add them up, you get the same result. BTW that is what maths is about, you always get the same result, the true result, no matter how. Very unlike speculation, or so-called "philosophy".

Arguing philosophically against something proven by maths or experience is a sure way to embarrass oneself... And I will henceforth stay away from the philosophical side of this topic, since philosophy = pseudo-science. :amused:

sgtboat 23-10-2008 04:26 PM

phislosophical response
 
I think one is the biggest number. AS the wizard in the movie fable showed us all the power in the world is concentrated in the oneness aspect of oneself. That makes one a really big number if you measure the effect of one person on the course of society.

_r.u.s.s. 23-10-2008 06:19 PM

Quote:

Originally Posted by Japofran (Post 340851)
No, infinity isn't certainly a set, it's not the whole field of real numbers --and it's none of them either. Infinity could be thought of as a single number two numbers (plus and minus infinity, although with complex limits it's different), but it's actually a concept that appears only when talking about limits, so everybody misunderstands infinity as a mathematical concept or number.

first of all, nobody said that infinity is a number (?). and then, infinity can be as well declared as a set with infinite amount of objects

Tomekk 23-10-2008 06:46 PM

Here, we will never have the chance to what the biggest number in the world is, cause it goes on forever....

Japo 23-10-2008 07:36 PM

Quote:

Originally Posted by _r.u.s.s. (Post 340858)
infinity can be as well declared as a set with infinite amount of objects

You already said that but I'm afraid I don't follow...

Not the mathematical "infinity" usually represented by
http://img380.imageshack.us/img380/5144/infinityco8.jpg
As in, "Achilles must traverse an infinite number of points before catching up to the tortoise", or in, "when x tends to 0, 1/x² tends to infinity". I think that's what we were talking about.

Romano 23-10-2008 07:42 PM

Quote:

Originally Posted by Japofran (Post 340871)
You already said that but I'm afraid I don't follow...

Not the mathematical "infinity" usually represented by
http://img380.imageshack.us/img380/5144/infinityco8.jpg
As in, "when x tends to 0, 1/x² tends to infinity".

Maybe to consult: http://en.wikipedia.org/wiki/Democritus

_r.u.s.s. 23-10-2008 07:53 PM

japorfan infinity is not only used or defined in function limits=S

dosraider 23-10-2008 08:11 PM

When I was still maried, and came home drunk after a drinking party with friends.
Infinity:
My wife nagging, and nagging , and nagging, and nagging, and nagging , and nagging, and nagging, and nagging , and nagging, and nagging, and nagging , and nagging, and nagging....

DoomYoshi 24-10-2008 03:00 AM

Big fleas have little fleas upon their backs to bite them
Little fleas have smaller fleas and so on ad infinitum
Quote:

Is there really such a thing as "infinity"?

It's a tough question, because the word "infinity" can mean different things in different contexts. In mathematics, whether or not a certain concept exists can depend on the context in which you ask the question. If you want to know more about this, you can refer to a fuller explanation of how a mathematical concept can exist in some contexts but not in others.
Here are some of the contexts in which the question "is there such a thing as infinity" can be asked, and the answers appropriate for each context. The details are given afterwards.
  1. In the context of a number system,
    in which "infinity" would mean something one can treat like a number. In this context, infinity does not exist.
  2. In the context of a topological space,
    in which "infinity" would mean something that certain sequences of numbers converge to. In this context, infinity does exist.
  3. In the context of measuring sizes of sets,
    in which "infinity" means a measurement of the size of an infinite set. In this context, such "infinity" concepts do exist but there are more than one of them, since not all infinite sets have the same size. So there does not exist any one single "infinity" concept; instead, there exists a whole collection of things called "infinite cardinal numbers".


I feel the need to present some sort of consensus. This is how it is done at my school (University of Toronto).


_r.u.s.s. 24-10-2008 10:20 AM

what you posted is already here in this thread :p

DoomYoshi 24-10-2008 10:48 PM

I accidentaly figured out two different sized infinities. There are an infinite number of prime numbers. There are also an infinite amount of numbers which are not prime. However, at any given point after 10, the number of prime numbers will be smaller than the number of not prime numbers. Hence, a smaller infinity. Trippy, huh?

_r.u.s.s. 24-10-2008 10:54 PM

nope, exactly the same range infinity

DoomYoshi 24-10-2008 11:07 PM

Yeah, you're right... both sets have a cardinality of aleph-null. It's just so weird though. At 10, there are 5 primes and 5 not primes. At 20 the ratio is 9:11. At 30, the ratio is 11:19. The prime numbers NEVER catch up! How can their infinities be the same size????

_r.u.s.s. 24-10-2008 11:25 PM

it's infinity it doesn't have "size" :D

DoomYoshi 24-10-2008 11:37 PM

From above...In the context of measuring sizes of sets,
in which "infinity" means a measurement of the size of an infinite set. In this context, such "infinity" concepts do exist but there are more than one of them, since not all infinite sets have the same size. So there does not exist any one single "infinity" concept; instead, there exists a whole collection of things called "infinite cardinal numbers".

The question is about the cardinality (aka size) of those two sets.

Japo 25-10-2008 12:13 PM

According to that, the size (cardinality) of the set of prime numbers would be the same that the set of non primes, and the same that the set of all natural numbers, etcetera:

Quote:

For instance, the set of even integers has the same size as the set of all integers. In one sense that may seem surprising, since the second set has all the elements of the first set in it plus all the odd integers as well
This concept is different from the other, and pertains to set theory.

If you ask me, the biggest number is the Atlantic Ocean. It's kind of a 5.

_r.u.s.s. 25-10-2008 12:15 PM

Quote:

Originally Posted by Japofran (Post 341008)
According to that, the size (cardinality) of the set of prime numbers would be the same that the set of non primes, and the same that the set of all natural numbers, etcetera

yes that's what we were basically talking about

AlumiuN 26-10-2008 03:39 AM

WTF? How can an infinite set be smaller than another infinite set? They're both infinite! They both have an infinite amount of numbers!

_r.u.s.s. 26-10-2008 09:18 AM

try imagining it on dimensions. 1d line, 2d whole plane and brand new dimension, 3d next noncollinear vector and you've got another dimension with volume

Japo 26-10-2008 09:46 AM

Quote:

Originally Posted by AlumiuN (Post 341064)
WTF? How can an infinite set be smaller than another infinite set? They're both infinite! They both have an infinite amount of numbers!

They're only concepts from set theory, which is based on certain axioms. Axioms are principles that can't be proven, but serve as foundation for the theory. So the theory holds true only after the axioms are accepted as true. And the theory's useful in the extent that those axioms can be applied to real concepts.

Quote:

To axiomatize a system of knowledge is to show that its claims can be derived from a small, well-understood set of sentences (the axioms). There are typically multiple ways to axiomatize a given mathematical domain.
The point is, the cardinality of infinite sets is a completely different concept from the concepts of infinity we were discussing before. Let's not mix separate concepts.

_r.u.s.s. 26-10-2008 09:55 AM

we were talking about big numbers and then somebody mentioned infinity, we didn't have any rules about not discussing infinite sets=S

actually an infinite set is quite a biggie if you ask me

Japo 26-10-2008 11:19 AM

Yes yes I didn't call off topic, I'd be as guilty as anyone. :P But if we are discussing about all this at the same time we shouldn't confuse different concepts referred to with the same word.

BTW: http://en.wikipedia.org/wiki/Hilbert...he_Grand_Hotel

DoomYoshi 27-10-2008 10:42 PM

Quote:

Originally Posted by _r.u.s.s. (Post 341080)
try imagining it on dimensions. 1d line, 2d whole plane and brand new dimension, 3d next noncollinear vector and you've got another dimension with volume

Another way to imagine the differences between infinities is on a number line. The set of real numbers is infinitely larger than the set of integers for instance.

dosraider 28-10-2008 04:57 AM

This topic is filled with infinite LULZ.

Bp103 03-11-2008 03:07 AM

The concept of infinite is a loop, if I could see in a infinite view (if there was nothing blocking my view) i would see the back of my head.

That is how infinite was explained to me....

Infinite is NaN in real world and only expressible on paper and theory?

Lots of simple meaningless threads are becoming intellectual discussions here.:omg:

I love this place lots of smart people.:cheesy:


Anyways 9 is the biggest number, where all other Numbers are based on. *walks away with a headache*

AlumiuN 03-11-2008 05:59 AM

You wouldn't see the back of your head. To do that, your sight would not need to be infinite, but curved over the surface of the Earth. And the concept of infinity can not be proved or disproved in physical terms because the human mind has no capacity for comprehending an infinite distance or an infinite set of numbers or objects.

And yes, this place is overflowing with smart people. :thumbs:

rlbell 03-11-2008 06:38 AM

Quote:

Originally Posted by DoomYoshi (Post 340974)
I accidentaly figured out two different sized infinities. There are an infinite number of prime numbers. There are also an infinite amount of numbers which are not prime. However, at any given point after 10, the number of prime numbers will be smaller than the number of not prime numbers. Hence, a smaller infinity. Trippy, huh?

Actually, there are as many integers as there are primes. They are both countable sets. Between any two integers, or any two primes, there are only a finite number of elements. A bigger infinity is the set of real numbers. Not only is there an infinite number of them, but there is an infinite nmber of distinct real numbers between any two elements.

The bit with Achilles and the tortoise is that while there are an infinite number of slices of time with Achilles not cathing up to the tortoise, the sum of the durations of that infinite number of instances is a finite number. If the tortoise has a 100 meter head start and scampers at the un-tortoiselike speed of one meter per second to Achilles leisurely (for Achilles) ten meters per second, the total duration of all those instants of time one hundred nineths of a second, for a total distance of one nineth of a kilometer

SlowCoder 03-11-2008 12:07 PM

Quote:

Originally Posted by rlbell (Post 341552)
Actually, there are as many integers as there are primes. They are both countable sets. Between any two integers, or any two primes, there are only a finite number of elements. A bigger infinity is the set of real numbers. Not only is there an infinite number of them, but there is an infinite nmber of distinct real numbers between any two elements.

The bit with Achilles and the tortoise is that while there are an infinite number of slices of time with Achilles not cathing up to the tortoise, the sum of the durations of that infinite number of instances is a finite number. If the tortoise has a 100 meter head start and scampers at the un-tortoiselike speed of one meter per second to Achilles leisurely (for Achilles) ten meters per second, the total duration of all those instants of time one hundred nineths of a second, for a total distance of one nineth of a kilometer

Is there a smiley dictatiing an exploding head? Oh, well, let's have a go ... :boom:!

arete 03-11-2008 12:14 PM

Oh dear *goes crosseyed* ... I think I've just gone crosseyed... :wacko:

Kugerfang 03-11-2008 09:35 PM

Infinity is not a number, it's a concept.

_r.u.s.s. 04-11-2008 02:06 PM

kugerfang how about you read the topic before posting and making yourself look funny

rlbell 04-11-2008 04:22 PM

Quote:

Originally Posted by Kugerfang (Post 341603)
Infinity is not a number, it's a concept.

It really is a number, it is just a really big number. One of the early problems in quantum mechanics is that infinity kept showing up in the calculations, normally of the form infinity = infinity. As this did not allow for any meaningful analysis, they 'renormalised' the equations by dividing both sides by infinity. Since the infinity on each side of the equation was of the same order, this allowed for meaningful calculations with finite results-- that matched experimental observations. Quantum gravity had the problem (I took a course in elementary particle physics eighteen years ago [and discovered that the particles were elementary, not the physics], and they may have solved it by now) that dividing both sides by infinity still had infinities on both sides.

It should be mentioned that dividing by infinity was not the straightforward task like dividing a number by two, but first coming up with a creative method of composing an expression that equals infinity and dividing by that (similar to constructing innovative ways of multiplying by one, or adding zero, in Algebra)

Never let anyone tell you that a degree in mathematics is entirely useless!

dosraider 04-11-2008 06:53 PM

Quote:

Originally Posted by dosraider (Post 341213)
This topic is filled with infinite LULZ.

Oh yeah, indeed, and the lulz is really neverending.
:nuts:

SlowCoder 04-11-2008 08:44 PM

Quote:

Originally Posted by rlbell (Post 341685)
It really is a number, it is just a really big number. One of the early problems in quantum mechanics is that infinity kept showing up in the calculations, normally of the form infinity = infinity. As this did not allow for any meaningful analysis, they 'renormalised' the equations by dividing both sides by infinity. Since the infinity on each side of the equation was of the same order, this allowed for meaningful calculations with finite results-- that matched experimental observations. Quantum gravity had the problem (I took a course in elementary particle physics eighteen years ago [and discovered that the particles were elementary, not the physics], and they may have solved it by now) that dividing both sides by infinity still had infinities on both sides.

It should be mentioned that dividing by infinity was not the straightforward task like dividing a number by two, but first coming up with a creative method of composing an expression that equals infinity and dividing by that (similar to constructing innovative ways of multiplying by one, or adding zero, in Algebra)

Never let anyone tell you that a degree in mathematics is entirely useless!

tssssss ...
:BOOM:!

DoomYoshi 04-11-2008 08:52 PM

Here is a neat site on the set of prime numbers.
infinity
I found it by exploring this incredible site


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