A question about infinity for mathsy/sciencey people.

[c_dug]

During my commute home tonight while filtering through endless miles of traffic down the A13 a thought got stuck in my mind.

If there are a hypothetical infinite amount of universes then it follows that I am in an infinite amount of them (because infinity?). Surely it also follows that there are an infinite amount that I am not in.

Is one infinity bigger than the other? Is that even possible? It seems to me that there must be more universes without me in them at all than there are with me in, but if both are infinity how does that even work?
____________________
I am a bellend, I am a man of constant sorrow, I am a gummy bear, I am a rock.

[_Will_]

I'm sure you mean realities? Which are hypothesised as being infinite. As there is one Universe, the totality of space and time.
____________________
Past -Honda qr50 | 2004 Peugeot Tkr s 50| | 1996 Yamaha XJ600s Diversion|

[c_dug]

Whatever the wording, the sentiment is the same no?
____________________
I am a bellend, I am a man of constant sorrow, I am a gummy bear, I am a rock.

[mentalboy]

[noobRider]

I'm not a maths person but while infinity is infinity, some infinities can be larger than others, e.g.

[trevor saxe-coburg-gotha]

[yen_powell]

[weasley]

Infinity is a mind-fuck. Here's one for you:

How many radii are there in a circle? Answer: an infinite number.

OK, so how many radii are there in a sphere? The same number?
____________________
Yamaha XJ600 | Yamaha YZF600R Thundercat | KTM 990 SMT | BMW F900XR TE

[daemonoid]

Cardinal it's of infinity is what you're looking for, noob appears to have a section of it.

Basically, infinities can be of different sizes - countable infinities or uncountable infinities. The two infinities you describe are the same size and are considered countable - you could use an integer to represent every single one of them.

Your infinities and integers are the same size... And, this is where it may sound odd, but they are the same size as an infinity of rational numbers (anything that can be represented as a fraction).

This pic may illustrate why...

https://divisbyzero.files.wordpress.com/2013/04/screen-shot-2013-04-16-at-9-23-14-pm.png

The red line shows a clear path through the list of rational numbers, at each step you can label the rational (give it a position... 1st, 2nd, 3rd...299th...). Because you have infinite integers you can always label any new number added to that table, thus they are countable.

Real numbers (which include irrationals like pi) are not, however, countable. You cannot even begin to draw the table - there will always be infinite values between 0 and the first value you choose.

<edit> watch this instead - https://youtu.be/fRhdpyaOhEo
____________________
current: ducati monster 750
past: hyosung gt250r, bajaj pulsar 180, hyosung gt 125 comet
@thomasgarrard | www.straitjkt.com | www.racingseven.com

[Rogerborg]

An infinite number of you are getting blowjobs right now.

However, in a sample of 1000 of your cocks, only one of them is getting sucked right now.

That's how textbooks should explain it.
____________________
Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike

[pinkyfloyd]

[orac]

Infinite isn't really a thing, it's simply a term used for something indescribably large to a point where a number can not illustrate whatever it is. Alot of things are described as infinite due to unknown properties. We already know the universe to our perception is not infinite
____________________
Current rides - 2016 Triumph Street Triple Rx, 1994 Suzuki Bandit 400 VM, TGB 204 Classic 125cc
"with nothing left to lose, there is everything to gain. It's not the size of the dog in the fight, it's the size of the fight in the dog"

[trevor saxe-coburg-gotha]

Yeah but do we? I mean, if the universe is continuously expanding surely we can't know whether the energy it uses in this expansion is finite or infinite? Also, what about the "space" it is expanding into - that might be infinite as well, mightn't it?

Please don't destroy my entire mind if/when replying to this as I am hopelessly stuck in a very crude newtonian thang and can't deal with other more hardcore stuff.
____________________
"Life is a sexually transmitted disease and the mortality rate is one hundred percent."

Mobylette Type 50 ---> Raleigh Grifter ---> Neval Minsk 125

[Taught2BCauti...]

[daemonoid]

[chris-red]

You aren't understanding infinity, it is a concept not a number.


∞+1 = ∞
∞x2 = ∞
∞x∞ = ∞
____________________
Well, you know what they say. If you want to save the world, you have to push a few old ladies down the stairs.
Skudd:- Perhaps she just thinks you are a window licker and is being nice just in case she becomes another Jill Dando.
WANTED:- Fujinon (Fuji) M42 (Screw on) lenses, let me know if you have anything.

[pdg]

[Rogerborg]

[chris-red]

There was a brilliant quote I read about infinity and understanding the scale of it. I can't remember who it was by and I am going to reproduce it far less elegantly.

Imagine a steel sphere the size of the earth, and then imagine that a fly lands on this sphere once every million years. The sphere will ware away into nothingness before you get anywhere close to infinity.
____________________
Well, you know what they say. If you want to save the world, you have to push a few old ladies down the stairs.
Skudd:- Perhaps she just thinks you are a window licker and is being nice just in case she becomes another Jill Dando.
WANTED:- Fujinon (Fuji) M42 (Screw on) lenses, let me know if you have anything.

[trevor saxe-coburg-gotha]

But wouldn't the fly just die after a few weeks? Or is this different flies?
____________________
"Life is a sexually transmitted disease and the mortality rate is one hundred percent."

Mobylette Type 50 ---> Raleigh Grifter ---> Neval Minsk 125

[daemonoid]

[chris-red]

[The Wobbly Orange]

My girlfriend put the Hollyoaks omnibus on the TV, pretty sure that lasts for infinity.
____________________
People tell me I am lovely. How wrong they are!

[Gazz]

[Chinaboy]