# The Naked Scientists Forum

### Author Topic: Have I calculated the value of infinity?  (Read 25330 times)

#### Damo the Optics Monkey

• Sr. Member
• Posts: 171
##### Have I calculated the value of infinity?
« Reply #25 on: 02/03/2009 09:09:23 »
Nope.
Why don't you explain it to me?

ditto

#### ScientificBoysClub

• Guest
##### Have I calculated the value of infinity?
« Reply #26 on: 02/03/2009 09:15:01 »
Nope.
Why don't you explain it to me?

Well well ok !! .... infinity is unlimited numbers !! right in unlimited if u pick up a number ... it will be always a mid point cos we can consider it as mid point when the condition is infinity !! hahhha GOT IT ??

#### ScientificBoysClub

• Guest
##### Have I calculated the value of infinity?
« Reply #27 on: 02/03/2009 09:15:17 »
Nope.
Why don't you explain it to me?

ditto

Well well ok !! .... infinity is unlimited numbers !! right in unlimited if u pick up a number ... it will be always a mid point cos we can consider it as mid point when the condition is infinity !! hahhha GOT IT ??

#### Chemistry4me

• Neilep Level Member
• Posts: 7709
##### Have I calculated the value of infinity?
« Reply #28 on: 02/03/2009 09:18:25 »
What are you trying to say?
That infinity is not infinitely infinite?

#### ScientificBoysClub

• Guest
##### Have I calculated the value of infinity?
« Reply #29 on: 02/03/2009 09:22:37 »
What are you trying to say?
That infinity is not infinitely infinite?

if a number is unlimited 12345678990.............................................................................................. to infinity u can consider any point as mid point !! GOT IT >>???

#### Chemistry4me

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##### Have I calculated the value of infinity?
« Reply #30 on: 02/03/2009 09:24:20 »
Well yes, I get that.
But what happened to the concept of infinity? I thought you were going to explain it.

#### ScientificBoysClub

• Guest
##### Have I calculated the value of infinity?
« Reply #31 on: 02/03/2009 09:27:23 »
Well yes, I get that.
But what happened to the concept of infinity? I thought you were going to explain it.
this is the concept !! GOT IT lol ... oh common dude ... concept is
if u r taking any  point in infinity it will be always a midpoint no matter what !??! this is the theory  ........ in math !!

#### Chemistry4me

• Neilep Level Member
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##### Have I calculated the value of infinity?
« Reply #32 on: 02/03/2009 09:29:20 »
Alright! I get it. I was just pulling your leg

#### Damo the Optics Monkey

• Sr. Member
• Posts: 171
##### Have I calculated the value of infinity?
« Reply #33 on: 02/03/2009 09:30:34 »
dividing by zero is a lot more fun.... hmmm infinity divided by zero... bwahahaahhaha

#### Chemistry4me

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##### Have I calculated the value of infinity?
« Reply #34 on: 02/03/2009 09:34:30 »
dividing by zero is a lot more fun....
Infinitely so!

#### syhprum

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##### Have I calculated the value of infinity?
« Reply #35 on: 02/03/2009 16:31:13 »
Have you ever considered selecting one particular member of the ScientificBoysClub for the LHC proton beam experiment ?

#### Raghavendra

• Hero Member
• Posts: 835
• Quantum
##### Have I calculated the value of infinity?
« Reply #36 on: 21/11/2009 09:41:42 »
no ...

#### Mr. Scientist

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##### Have I calculated the value of infinity?
« Reply #37 on: 21/11/2009 12:11:56 »
Ininfities... an infinitely hard concept to grasp, from any level of expertize.

#### litespeed

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##### Have I calculated the value of infinity?
« Reply #38 on: 21/11/2009 17:50:15 »
Infinity is not a number. I don't know what it is, but I know if I add one cantalope to a thousand watermellons, I still have a thousand watermellons.....

#### Mr. Scientist

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##### Have I calculated the value of infinity?
« Reply #39 on: 21/11/2009 18:02:17 »
They say that mathematics is an abstract. But if the general math we work with today is so abstractual, then we know nothing really, as when it comes down to it, singularities are a nightmare, and yet the closest thing to God.

#### LeeE

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• Posts: 3382
##### Have I calculated the value of infinity?
« Reply #40 on: 21/11/2009 18:04:36 »
I think you can only properly regard infinity as a dynamic number i.e. time, in the sense of before and after, is an intrinsic factor, but this means you can't really use it in static equations and make much sense.

For example, the static equation 1 + 1 = 2 is always true...

but if you try to use infinity in such an equation...

∞ + 1 = ∞

therefore ∞ - ∞ = 1

which leaves us with 0 = 1

#### Mr. Scientist

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##### Have I calculated the value of infinity?
« Reply #41 on: 21/11/2009 18:08:09 »
I think you can only properly regard infinity as a dynamic number i.e. time, in the sense of before and after, is an intrinsic factor, but this means you can't really use it in static equations and make much sense.

For example, the static equation 1 + 1 = 2 is always true...

but if you try to use infinity in such an equation...

∞ + 1 = ∞

therefore ∞ - ∞ = 1

which leaves us with 0 = 1

That is a mathematical fallacy.

#### lightarrow

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##### Have I calculated the value of infinity?
« Reply #42 on: 21/11/2009 18:59:29 »
I think you can only properly regard infinity as a dynamic number i.e. time, in the sense of before and after, is an intrinsic factor, but this means you can't really use it in static equations and make much sense.

For example, the static equation 1 + 1 = 2 is always true...

but if you try to use infinity in such an equation...

∞ + 1 = ∞

therefore ∞ - ∞ = 1

which leaves us with 0 = 1

That is a mathematical fallacy.
Can you show why?

#### Geezer

• Neilep Level Member
• Posts: 8328
• "Vive la résistance!"
##### Have I calculated the value of infinity?
« Reply #43 on: 21/11/2009 21:08:53 »
That is a mathematical fallacy.

I think that was LeeE's point. You can't do math with infinity. It has no value!

(It may also be "pointless". --- OK! OK! No need to push. I was just about to leave anyway.)
« Last Edit: 22/11/2009 01:33:49 by Geezer »

#### Mr. Scientist

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##### Have I calculated the value of infinity?
« Reply #44 on: 22/11/2009 02:39:13 »
I think you can only properly regard infinity as a dynamic number i.e. time, in the sense of before and after, is an intrinsic factor, but this means you can't really use it in static equations and make much sense.

For example, the static equation 1 + 1 = 2 is always true...

but if you try to use infinity in such an equation...

∞ + 1 = ∞

therefore ∞ - ∞ = 1

which leaves us with 0 = 1

That is a mathematical fallacy.
Can you show why?

Of course i can.

I'll prove the infinity part to be completely irrelevent by showing the reduction 0=1 is of absurdum:

let x=1

Take the derivative of both sides which inexorably yields:

d/dx(x)=d/dx(1)

so naturally one would expect 1=0 as a solution, but the fallacy lies in treating x as a variable which can change over some given time. That in a nutshell disproves the entire theory.

#### LeeE

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##### Have I calculated the value of infinity?
« Reply #45 on: 22/11/2009 12:21:10 »
I can't see what you've proved at all there.

Of course the reduction to 0 = 1 is absurd.  That was the point.

#### Mr. Scientist

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##### Have I calculated the value of infinity?
« Reply #46 on: 23/11/2009 00:16:15 »
I can't see what you've proved at all there.

Of course the reduction to 0 = 1 is absurd.  That was the point.

Yes, that point was made for you. I thought you intended it was correct. I was wrong in this case, and apologize.

#### Mr. Scientist

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##### Have I calculated the value of infinity?
« Reply #47 on: 23/11/2009 00:19:04 »
But it might interest many here to know, that this type of rigor has been violated early on in physics history. I can't remember who exactly, but many scientists (who's theories today) hold had messed about using concepts like ∞ - ∞ = 1.

It's not so much that they are fallacies, but more of an indication that the equations derived are not complete.

#### lightarrow

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##### Have I calculated the value of infinity?
« Reply #48 on: 23/11/2009 11:54:57 »

Of course i can.

I'll prove the infinity part to be completely irrelevent by showing the reduction 0=1 is of absurdum:

let x=1

Take the derivative of both sides which inexorably yields:

d/dx(x)=d/dx(1)

so naturally one would expect 1=0 as a solution, but the fallacy lies in treating x as a variable which can change over some given time. That in a nutshell disproves the entire theory.
No the fallacy is in this: from ∞ + 1 = ∞ (which is true) you cannot deduce that ∞ - ∞ = 1 because you are not allowd to sum or subtract infinite from both sides of an equation; you can do that only with *finite* numbers.
Example:

2 = 2 but: 2 + x ≠ 2 + x2

if x --> +∞ in the last equation, you have 2 + ∞ ≠ 2 + ∞.

Said in another way: infinite is not a number, it can actually "have" an arbitrary value, so from 2 = 2 it doesn't follow that 2 + ∞ = 2 + ∞.
« Last Edit: 23/11/2009 12:04:54 by lightarrow »

#### way12go

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• Posts: 1
##### Have I calculated the value of infinity?
« Reply #49 on: 23/11/2009 12:28:30 »
Infinity means not finite and it means infinity can't be a number. There are infinite numbers but when it comes to existence number of apples can't be infinite. Infinite is just the opposite of finite and any number is finite but never infinite. For more information please visit my blog
sagargorijala DOT blogspot DOT com

#### The Naked Scientists Forum

##### Have I calculated the value of infinity?
« Reply #49 on: 23/11/2009 12:28:30 »