Since geeky science questions seem to be today's fashion...
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Q: Describe a 2 or 3 dimensional shape with an infinite edge and zero area, which takes up a finite amount of space.
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Q: Describe a 2 or 3 dimensional shape with an infinite edge and zero area, which takes up a finite amount of space.
Zero area yet still requires space? A ray perhaps?
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Q: Describe a 2 or 3 dimensional shape with an infinite edge and zero area, which takes up a finite amount of space.
Vector
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Q: Describe a 2 or 3 dimensional shape with an infinite edge and zero area, which takes up a finite amount of space.
Gregory.Gadow wrote:
Describe a 2 or 3 dimensional shape with an infinite edge and zero area, which takes up a finite amount of space.
No.
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Q: Describe a 2 or 3 dimensional shape with an infinite edge and zero area, which takes up a finite amount of space.
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Zero area yet still requires space? A ray perhaps?
That is a 1-dimensional shape that can be placed in a 2 or 3 dimensional space. Perhaps a loop would qualify as an answer (depending on your definition of "infinite").
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Q: Describe a 2 or 3 dimensional shape with an infinite edge and zero area, which takes up a finite amount of space.
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Q: Describe a 2 or 3 dimensional shape with an infinite edge and zero area, which takes up a finite amount of space.
Peano curve?
I can imagine the sinking feeling one would have after ordering my book, only to find a laughably ridiculous theory with demented logic once the book arrives - Mark McCutcheon
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Q: Describe a 2 or 3 dimensional shape with an infinite edge and zero area, which takes up a finite amount of space.
I'm guessing you're not going to allow t as a dimension, right? ;)
cheers, Chris Maunder The Code Project | Co-founder Microsoft C++ MVP
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Q: Describe a 2 or 3 dimensional shape with an infinite edge and zero area, which takes up a finite amount of space.
How about a singularity?
Zach
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Q: Describe a 2 or 3 dimensional shape with an infinite edge and zero area, which takes up a finite amount of space.
a point. infinite edge, zero area (zero volume in 3d). Don't get the last qualifier, since it contradicts the second...perhaps you meant 'occupies a specific location'.
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Q: Describe a 2 or 3 dimensional shape with an infinite edge and zero area, which takes up a finite amount of space.
not np compliant, so wont answer
------------------------------------ I will never again mention that I was the poster of the One Millionth Lounge Post, nor that it was complete drivel. Dalek Dave
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Q: Describe a 2 or 3 dimensional shape with an infinite edge and zero area, which takes up a finite amount of space.
That would be a fractal, such as this Sierpinski triangle[^]. ADDED Although not many would agree they have 2 or 3 (or any integer) number of dimensions... :)
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modified on Thursday, May 6, 2010 6:06 PM
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Q: Describe a 2 or 3 dimensional shape with an infinite edge and zero area, which takes up a finite amount of space.
Gregory.Gadow wrote:
Describe a 2 or 3 dimensional shape with an infinite edge and zero area, which takes up a finite amount of space.
The Euro ? Marc
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That would be a fractal, such as this Sierpinski triangle[^]. ADDED Although not many would agree they have 2 or 3 (or any integer) number of dimensions... :)
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modified on Thursday, May 6, 2010 6:06 PM
Good friggin call. Though I wouldn't say it has an infinite edge. Perhaps an infinite number of edges, but each of them of a finite length. And what happens when the cumulative edge length approaches infinity? Doesn't it approach having a surface? Who knew there was so much philosophy in such a simple question? :rolleyes:
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Q: Describe a 2 or 3 dimensional shape with an infinite edge and zero area, which takes up a finite amount of space.
Asymptote. y=1/x.
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Asymptote. y=1/x.
you mean a hyperbole (which BTW has two asymptotes). "takes up a finite amount of space" is debatable now, you need a lot of space to store one without folding, bending or cutting it. :)
Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]
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Good friggin call. Though I wouldn't say it has an infinite edge. Perhaps an infinite number of edges, but each of them of a finite length. And what happens when the cumulative edge length approaches infinity? Doesn't it approach having a surface? Who knew there was so much philosophy in such a simple question? :rolleyes:
well, either edge is used for perimeter, not the line connecting two vertices; or we could agree the vertices are all melting together and all edges become one... the surface issue is the problematic one, they are fractals after all. :)
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Q: Describe a 2 or 3 dimensional shape with an infinite edge and zero area, which takes up a finite amount of space.
I'm surprised that no one has suggested fractals. The one I had in mind is called the Sierpinski Triangle. Observe: 1. Draw an equilateral triangle. 2. For each triangle, find the mid-point of its sides and draw lines connecting them, creating four triangles. 3. Remove the triangle in the middle, leaving three equilateral triangles connected at their vertices, each having three edges that are half of the starting triangle. 4. Go to step 2. The triangle starts with three edges of length x, so its total perimeter is 3x. After the first iteration, the shape has nine edges -- three on each of the three triangles -- each of which have a length of x/2, meaning the shape's total perimeter is 9x/2, longer than what we started with. After the first iteration, the area is 3/4 what it was before. As you continue with more iterations, the number of edges increases without bounds, and so does the shape's perimeter. As the number of iterations approaches infinity, so do the number of edges and, consequently, the length of its perimeter. Also, each iteration decreases the area geometrically: as the number of iterations approaches infinity, the area bound by the perimeter approaches zero. The shape itself never exceeds the bounds set by the starting triangle, which makes it finite. With a variant called the Sierpinski Carpet, you start with a single square, divide it into nine squares, remove the center one and repeat. Again, the number of edges and the perimeter approach infinity while the area bound by the perimeter approaches zero. There are also 3-d versions of these shapes, called sponges, which start with a tetrahedron and a cube respectively. Added: Oops, a bit of a screw up. The number of edges is doubled, not tripled; I was counting the starting edges of the triangle twice. The increase in the length of the perimeter is still 9x/2, however, as you have the three starting edges (x + x + x = 3x or 6x/2) plus the three edges of the now empty center triangle (x/2 + x/2 + x/2 = 3x/2)
modified on Thursday, May 6, 2010 8:31 PM
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you mean a hyperbole (which BTW has two asymptotes). "takes up a finite amount of space" is debatable now, you need a lot of space to store one without folding, bending or cutting it. :)
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Luc Pattyn wrote:
you mean a hyperbole
NOW who's using hyperbole. ;P
Luc Pattyn wrote:
takes up a finite amount of space
Depends on how you define space. If you consider bounding rectangle, it takes up infinite space. If you consider the bound between the equation and the axes, I'm pretty sure that area is finite (if I felt like polishing my calculus skills, I could probably calculate exactly how much that area is). If you consider the amount of volume the curve itself displaces, it would take up no space at all. :)