September 16th, 2018, 03:34 AM  #1 
Newbie Joined: Jun 2018 From: Brasil Posts: 20 Thanks: 0  algebraic structures
Can someone help please?

September 16th, 2018, 05:34 AM  #2 
Senior Member Joined: Aug 2017 From: United Kingdom Posts: 311 Thanks: 109 Math Focus: Number Theory, Algebraic Geometry 
What exactly are you struggling with in this question?

September 16th, 2018, 01:16 PM  #3 
Newbie Joined: Jun 2018 From: Brasil Posts: 20 Thanks: 0 
To develop the mathematics studied today, numerous changes in the organization of all mathematical concepts were necessary. The design of the numerical sets was more rigorous in its construction with Georg Cantor, who inquired about infinite numbers. Cantor started several studies on the numerical sets, thus constituting the set theory. In particular, the sets of natural numbers, integers, rational, irrational, and real. On these sets, classify V for the true sentences and F for the false ones and mark the alternative that presents the sequence CORRECT google tradutor. 
September 16th, 2018, 02:08 PM  #4 
Senior Member Joined: Aug 2017 From: United Kingdom Posts: 311 Thanks: 109 Math Focus: Number Theory, Algebraic Geometry 
Yes, given the format of your other question, it was clear what was being asked. I'm interested in what you have tried and where you have got stuck.

September 16th, 2018, 02:21 PM  #5  
Senior Member Joined: Aug 2012 Posts: 2,193 Thanks: 645  Quote:
And remember: The same people build your selfdriving cars. Last edited by Maschke; September 16th, 2018 at 02:26 PM.  
September 16th, 2018, 04:44 PM  #6 
Newbie Joined: Jun 2018 From: Brasil Posts: 20 Thanks: 0  
September 16th, 2018, 05:30 PM  #7 
Math Team Joined: May 2013 From: The Astral plane Posts: 2,073 Thanks: 843 Math Focus: Wibbly wobbly timeywimey stuff. 
To be specific: $\displaystyle Q \cup N \subseteq R$ N is the counting numbers, which are a subset of the rationals. So $\displaystyle Q \cup N = Q$ and $\displaystyle Q \subset R$. You show us the next one. Dan 
September 16th, 2018, 06:05 PM  #8 
Senior Member Joined: Aug 2012 Posts: 2,193 Thanks: 645  

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