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16

4

$begingroup$

I'm very common and often you see me,

Everything's believed to be made of me.


Make no mistake, I look largest when I'm seven,

But I'm largest when I'm five, it is proven.


But alas at those ages you've never seen me,

For you've seen me only when I'm three.


Unlike you mortals who grow old and die,

I keep shrinking and shriveling by and by,


I don't die when I'm seventy, eighty or ninety,

I only kneel and perish after the infinity.

What am I?

riddle mathematics poetry

share|improve this question

asked 8 hours ago

ZoirZoir

76322 silver badges1717 bronze badges

$endgroup$

add a comment
 | 

16

4

$begingroup$

I'm very common and often you see me,

Everything's believed to be made of me.


Make no mistake, I look largest when I'm seven,

But I'm largest when I'm five, it is proven.


But alas at those ages you've never seen me,

For you've seen me only when I'm three.


Unlike you mortals who grow old and die,

I keep shrinking and shriveling by and by,


I don't die when I'm seventy, eighty or ninety,

I only kneel and perish after the infinity.

What am I?

riddle mathematics poetry

share|improve this question

asked 8 hours ago

ZoirZoir

76322 silver badges1717 bronze badges

$endgroup$

add a comment
 | 

$begingroup$

I'm very common and often you see me,

Everything's believed to be made of me.


Make no mistake, I look largest when I'm seven,

But I'm largest when I'm five, it is proven.


But alas at those ages you've never seen me,

For you've seen me only when I'm three.


Unlike you mortals who grow old and die,

I keep shrinking and shriveling by and by,


I don't die when I'm seventy, eighty or ninety,

I only kneel and perish after the infinity.

What am I?

riddle mathematics poetry

share|improve this question

asked 8 hours ago

ZoirZoir

76322 silver badges1717 bronze badges

$endgroup$

share|improve this question

asked 8 hours ago

ZoirZoir

76322 silver badges1717 bronze badges

share|improve this question

asked 8 hours ago

ZoirZoir

76322 silver badges1717 bronze badges

asked 8 hours ago

ZoirZoir

76322 silver badges1717 bronze badges

asked 8 hours ago

ZoirZoir

76322 silver badges1717 bronze badges

1 Answer
1

active

oldest

votes

16

$begingroup$

My guess:

An n-dimensional sphere.

I'm very common and often you see me,

There are lots of spheres

Everything's believed to be made of me.

This could refer to the https://en.wikipedia.org/wiki/Bohr_model of atoms...

Make no mistake, I look largest when I'm seven,

But I'm largest when I'm five, it is proven.

That was one of the keys:

As the diagram at https://en.wikipedia.org/wiki/Hypersphere shows: The surface of the sphere is largest in dimension 7. But the volume reaches its peak at dimension 5.

But alas at those ages you've never seen me,

For you've seen me only when I'm three.

We can see a sphere only (or at most) in 3 dimensions

Unlike you mortals who grow old and die,

I keep shrinking and shriveling by and by,

I don't die when I'm seventy, eighty or ninety,

I only kneel and perish after the infinity.

The surface and the volume of an n-dimensional sphere approach zero when n goes towards infinity. Even at 70 or 80 dimensions, there's hardly anything left.

share|improve this answer

answered 7 hours ago

Marco13Marco13

1,17577 silver badges1717 bronze badges

$endgroup$

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  I'd be surprised if this isnt it.
  $endgroup$
  – Certainly not a dog
  6 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  Correct, well done :) Will accept in a bit!
  $endgroup$
  – Zoir
  6 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  (I meant the second line to be rot13(ryrpgebaf, cebgbaf, naq arhgebaf) as they are widely believed to be spherical but certainly your interpretation would work too)
  $endgroup$
  – Zoir
  6 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  It's worth noting that statements like "the n dimensional sphere has largest volume in dimension 5" are only true for spheres of radius 1. Spheres of radius 2 are largest in dimension 24. Spheres of radius 3 are largest in dimension 56. The truth, as boring as it may be, is that it is meaningless to compare volumes of different dimensions. You wouldn't say that the volume of a sphere is larger than the area of a circle because volume and area have different units. For the same reason, it is nonsensical to say that a 5-dimensional sphere has larger volume than a sphere in any other dimension.
  $endgroup$
  – Brady Gilg
  9 mins ago
  

  
  
  
  

add a comment
 | 

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16

$begingroup$

My guess:

An n-dimensional sphere.

I'm very common and often you see me,

There are lots of spheres

Everything's believed to be made of me.

This could refer to the https://en.wikipedia.org/wiki/Bohr_model of atoms...

Make no mistake, I look largest when I'm seven,

But I'm largest when I'm five, it is proven.

That was one of the keys:

As the diagram at https://en.wikipedia.org/wiki/Hypersphere shows: The surface of the sphere is largest in dimension 7. But the volume reaches its peak at dimension 5.

But alas at those ages you've never seen me,

For you've seen me only when I'm three.

We can see a sphere only (or at most) in 3 dimensions

Unlike you mortals who grow old and die,

I keep shrinking and shriveling by and by,

I don't die when I'm seventy, eighty or ninety,

I only kneel and perish after the infinity.

The surface and the volume of an n-dimensional sphere approach zero when n goes towards infinity. Even at 70 or 80 dimensions, there's hardly anything left.

share|improve this answer

answered 7 hours ago

Marco13Marco13

1,17577 silver badges1717 bronze badges

$endgroup$

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  I'd be surprised if this isnt it.
  $endgroup$
  – Certainly not a dog
  6 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  Correct, well done :) Will accept in a bit!
  $endgroup$
  – Zoir
  6 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  (I meant the second line to be rot13(ryrpgebaf, cebgbaf, naq arhgebaf) as they are widely believed to be spherical but certainly your interpretation would work too)
  $endgroup$
  – Zoir
  6 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  It's worth noting that statements like "the n dimensional sphere has largest volume in dimension 5" are only true for spheres of radius 1. Spheres of radius 2 are largest in dimension 24. Spheres of radius 3 are largest in dimension 56. The truth, as boring as it may be, is that it is meaningless to compare volumes of different dimensions. You wouldn't say that the volume of a sphere is larger than the area of a circle because volume and area have different units. For the same reason, it is nonsensical to say that a 5-dimensional sphere has larger volume than a sphere in any other dimension.
  $endgroup$
  – Brady Gilg
  9 mins ago
  

  
  
  
  

add a comment
 | 

16

$begingroup$

My guess:

An n-dimensional sphere.

I'm very common and often you see me,

There are lots of spheres

Everything's believed to be made of me.

This could refer to the https://en.wikipedia.org/wiki/Bohr_model of atoms...

Make no mistake, I look largest when I'm seven,

But I'm largest when I'm five, it is proven.

That was one of the keys:

As the diagram at https://en.wikipedia.org/wiki/Hypersphere shows: The surface of the sphere is largest in dimension 7. But the volume reaches its peak at dimension 5.

But alas at those ages you've never seen me,

For you've seen me only when I'm three.

We can see a sphere only (or at most) in 3 dimensions

Unlike you mortals who grow old and die,

I keep shrinking and shriveling by and by,

I don't die when I'm seventy, eighty or ninety,

I only kneel and perish after the infinity.

The surface and the volume of an n-dimensional sphere approach zero when n goes towards infinity. Even at 70 or 80 dimensions, there's hardly anything left.

share|improve this answer

answered 7 hours ago

Marco13Marco13

1,17577 silver badges1717 bronze badges

$endgroup$

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  I'd be surprised if this isnt it.
  $endgroup$
  – Certainly not a dog
  6 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  Correct, well done :) Will accept in a bit!
  $endgroup$
  – Zoir
  6 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  (I meant the second line to be rot13(ryrpgebaf, cebgbaf, naq arhgebaf) as they are widely believed to be spherical but certainly your interpretation would work too)
  $endgroup$
  – Zoir
  6 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  It's worth noting that statements like "the n dimensional sphere has largest volume in dimension 5" are only true for spheres of radius 1. Spheres of radius 2 are largest in dimension 24. Spheres of radius 3 are largest in dimension 56. The truth, as boring as it may be, is that it is meaningless to compare volumes of different dimensions. You wouldn't say that the volume of a sphere is larger than the area of a circle because volume and area have different units. For the same reason, it is nonsensical to say that a 5-dimensional sphere has larger volume than a sphere in any other dimension.
  $endgroup$
  – Brady Gilg
  9 mins ago
  

  
  
  
  

add a comment
 | 

$begingroup$

My guess:

An n-dimensional sphere.

I'm very common and often you see me,

There are lots of spheres

Everything's believed to be made of me.

This could refer to the https://en.wikipedia.org/wiki/Bohr_model of atoms...

Make no mistake, I look largest when I'm seven,

But I'm largest when I'm five, it is proven.

That was one of the keys:

As the diagram at https://en.wikipedia.org/wiki/Hypersphere shows: The surface of the sphere is largest in dimension 7. But the volume reaches its peak at dimension 5.

But alas at those ages you've never seen me,

For you've seen me only when I'm three.

We can see a sphere only (or at most) in 3 dimensions

Unlike you mortals who grow old and die,

I keep shrinking and shriveling by and by,

I don't die when I'm seventy, eighty or ninety,

I only kneel and perish after the infinity.

The surface and the volume of an n-dimensional sphere approach zero when n goes towards infinity. Even at 70 or 80 dimensions, there's hardly anything left.

share|improve this answer

answered 7 hours ago

Marco13Marco13

1,17577 silver badges1717 bronze badges

$endgroup$

share|improve this answer

answered 7 hours ago

Marco13Marco13

1,17577 silver badges1717 bronze badges

answered 7 hours ago

Marco13Marco13

1,17577 silver badges1717 bronze badges

answered 7 hours ago

Marco13Marco13

1,17577 silver badges1717 bronze badges