What is the Relationship Between Perimeter and Area in an Infinite Staircase?

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Discussion Overview

The discussion revolves around the relationship between perimeter and area in the context of an infinite staircase, exploring how infinitely reducing area may affect perimeter. Participants examine the implications of approximating curves with jagged shapes and the convergence of shapes to a line.

Discussion Character

  • Exploratory
  • Debate/contested
  • Mathematical reasoning

Main Points Raised

  • One participant questions whether it is possible to maintain the same perimeter while infinitely reducing the area, referencing a visual representation of an infinite staircase.
  • Another participant suggests that while approximations by regular polygons are also jagged, they approach a limit of pi for area.
  • A different viewpoint asserts that the perimeter of the polygon remains constant at 4, while the area approaches that of a circle.
  • One participant introduces a related problem involving "stairsteps" from (0, 0) to (1, 1), noting that the total length remains 2, contrasting with the straight line's length of \(\sqrt{2}\).
  • There is a contention regarding the uniform convergence of the stairsteps to the line, with one participant asserting they do not converge uniformly, while another claims they do.

Areas of Agreement / Disagreement

Participants express differing views on the convergence of the staircase to a line and the relationship between perimeter and area, indicating that multiple competing perspectives remain without consensus.

Contextual Notes

The discussion includes assumptions about the nature of convergence and the definitions of perimeter and area in the context of infinite constructions, which may not be fully resolved.

macbowes
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Alright, so I was just browsing 4Chan and I came across this post.

[PLAIN]http://img121.imageshack.us/img121/5374/1291537737867.jpg

I realize infinitely making corners out of corners may result in an approximation of a perfect curve, however, it will always be jagged and thus result in the difference between 4 and pi.

My question is, can you maintain the same perimeter while infinitely reducing the area? Cause that's what it appears to be doing in the picture.
 
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macbowes said:
I realize infinitely making corners out of corners may result in an approximation of a perfect curve, however, it will always be jagged and thus result in the difference between 4 and pi.

Approximations by regular polygons will also always be jagged, but the limit is pi.
 
The perimeter will polygon will always equal 4. The area, of the polygon, however, will come infinitely close to the area of the circle. At least that's my understanding.
 
That's a variation on the problem where you take more and more "stairsteps" from (0, 0) to (1, 1) getting a figure very close to the straight line from (0, 0) to (1, 1) but showing that the total length is always "2", not the length of the straight line, [math]\sqrt{2}[/math]. Essentially, the problem is that the stairsteps do not converge uniformly to the line.
 
HallsofIvy said:
Essentially, the problem is that the stairsteps do not converge uniformly to the line.

They do converge uniformly to the line.
 

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