Measure Theory-Lebesguq Measure

  • Thread starter Thread starter WannaBe22
  • Start date Start date
  • Tags Tags
    Measure
WannaBe22
Messages
73
Reaction score
0

Homework Statement


Prove the set A= \bigcup_{n=1}^{\infty} ( \frac{n}{5} , \frac{n}{5} + \frac{n+1}{2^n} ) is Lebesgue measurable and calculate its measure.


Homework Equations


The Attempt at a Solution


I've proved the set is measurable...But how can I calculate its measure?


I will be delighted to get some guidance

Thanks in advance !
 
Last edited:
Physics news on Phys.org
It looks to me like
A= (\frac{1}{5}, \infty)
 
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