What is the Staircase Line in a Unit Square?

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Discussion Overview

The discussion revolves around the concept of a staircase line drawn within a unit square, exploring the total distance of this line compared to the diagonal distance. Participants examine the implications of this construction in relation to mathematical concepts such as distance metrics and geometric paradoxes.

Discussion Character

  • Exploratory
  • Debate/contested
  • Mathematical reasoning

Main Points Raised

  • One participant describes creating a zig-zag staircase line in a unit square, noting that the total distance of the vertical and horizontal segments sums to 2, regardless of the number of segments used.
  • Another participant suggests a connection to fractals, implying a deeper mathematical structure.
  • A different participant references the "diagonal paradox," indicating that this topic has been discussed previously and encourages others to search for more information.
  • One post introduces the concept of Minkowski's L1 distance, also known as the taxicab metric, as a relevant framework for understanding the distances involved.
  • A participant elaborates on the "Weyl Tile argument," linking it to philosophical discussions in mathematics and its implications for quantization of space, mentioning spin networks as a more advanced concept.
  • Another participant shares links to previous discussions and resources related to the diagonal paradox, indicating they found the information they were seeking.

Areas of Agreement / Disagreement

Participants express various viewpoints on the implications of the staircase line and its relation to established mathematical concepts. There is no consensus on the interpretations or applications of the ideas presented, and multiple competing views remain.

Contextual Notes

The discussion touches on complex mathematical concepts that may depend on specific definitions and interpretations, and some assumptions about the nature of distance and geometry are not fully articulated.

fourier jr
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Take the unit square & make a zig-zag line like a staircase from one corner to the opposite one. Then the total distance if you add up the vertical parts & & horizontal parts is 2. Even if you make trillions & trillions of 'stairs' the sum of all the vertical parts & horizontal parts is still 2 even though the graph would look more & more like a diagonal line, whose length of course is [tex]\sqrt{2}[/tex]. Someone mentioned this example before & put up a link to the mathworld page on it but I couldn't find it & nothing I searched for seemed to work. :confused:
 
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Hummm... fractals?
 
The diagonal paradox, again. Use the search button. :smile:
 
Minkowski's L1 distance

Taxicab metric?
 
Weyl Tile argument

fourier jr said:
Take the unit square & make a zig-zag line like a staircase from one corner to the opposite one. Then the total distance if you add up the vertical parts & & horizontal parts is 2. Even if you make trillions & trillions of 'stairs' the sum of all the vertical parts & horizontal parts is still 2 even though the graph would look more & more like a diagonal line, whose length of course is [tex]\sqrt{2}[/tex]. Someone mentioned this example before & put up a link to the mathworld page on it but I couldn't find it & nothing I searched for seemed to work. :confused:

It's related to the "Weyl Tile argument", which is discussed in some books on philosophy of mathematics, and even some web pages:
http://faculty.washington.edu/smcohen/320/atomism.htm
The argument as stated there isn't serious, but this has serious applications to why naive "quantization" of space won't work. See spin networks for a more sophisticated approach: http://math.ucr.edu/home/baez/penrose/

It's also related to a "paradox" in geometric measure theory, which is probably closer to the applications you have in mind, huh? See p. 129 of Spivak, Calculus on Manifolds.
 
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