Can a Wild Metric on a 2D Disc Prevent Isometric Embedding in R^3?

In summary, the "Wild metric" on the 2 disc is a non-standard mathematical concept that measures the distance between points on a 2-dimensional disc. It takes into account the disc's curvature and boundaries, unlike the traditional Euclidean metric. Studying the "Wild metric" can provide insights into non-Euclidean geometry and has applications in various fields. It differs from the Euclidean metric and can be extended to higher dimensions, although it is most commonly studied in 2 dimensions.
  • #1
wofsy
726
0
Can you show me a metric on the 2 dimensional disc so wild that no open subset can be embedded in R^3?
 
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  • #2
Embedded isometrically? Otherwise, it's false.
 
  • #3
zhentil said:
Embedded isometrically? Otherwise, it's false.

yes. No open subset can be embedded isometrically in R^3
 

FAQ: Can a Wild Metric on a 2D Disc Prevent Isometric Embedding in R^3?

What is the "Wild metric" on the 2 disc?

The "Wild metric" on the 2 disc refers to a mathematical concept that measures the distance between points on a 2-dimensional disc. It is called "wild" because it is a non-standard metric, meaning it does not follow the usual rules of distance measurement.

How is the "Wild metric" calculated on the 2 disc?

The "Wild metric" is calculated using a formula that takes into account the geometric properties of the 2 disc. Unlike the traditional Euclidean metric, the "Wild metric" takes into consideration the curvature and boundaries of the disc in its calculation.

What is the purpose of studying the "Wild metric" on the 2 disc?

Studying the "Wild metric" on the 2 disc can provide insights into non-Euclidean geometry and help us understand how distance is measured in curved spaces. It also has applications in fields such as physics, computer science, and topology.

How does the "Wild metric" differ from the traditional Euclidean metric?

The "Wild metric" differs from the traditional Euclidean metric in that it takes into account the curvature and boundaries of the 2 disc, while the Euclidean metric assumes a flat, infinite space. This results in different distance measurements between points on the disc.

Can the "Wild metric" be extended to higher dimensions?

Yes, the "Wild metric" can be extended to higher dimensions, such as the 3-dimensional sphere. However, the calculations become more complex as the number of dimensions increases. Therefore, the "Wild metric" is most commonly studied in 2 dimensions.

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