Imbedding of a compact Hausdorff space

  • Thread starter Thread starter radou
  • Start date Start date
  • Tags Tags
    Compact Space
radou
Homework Helper
Messages
3,148
Reaction score
8

Homework Statement



This is a short question, just to check.

Let X be a compact Hausdorff space, and suppose that for each x in X, there exists a neighborhood U of x and a positive integer k such that U can be imbedded in R^k. One needs to show that there exists a positive integer N such that X can be imbedded in R^N.

The Attempt at a Solution



Now, basically I don't see the difference between the proof of this fact and that of Munkres' Theorem 36.2., Section 36, except (of course) that the integer N will be different. But the same proof should work, unless I'm mistaken. Am I right on this one?
 
Physics news on Phys.org
It seems that you are correct. The same proof applies!
 
micromass said:
It seems that you are correct. The same proof applies!

OK, thanks!
 
There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
Back
Top