Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
NCTM or The Math Forum.


Marcos
Posts:
1
Registered:
10/9/11


Set Theory
Posted:
Oct 9, 2011 10:18 AM



Hello I have a question about two problems that I been trying and trying but I can't get the right answer.. I have attached the first one since it has too many symbols. I know that one is supposed to be solved using Theorems and Lemmas, but I can only get so far...
and the second one is...
2) Prove if R1 is a relation on A and R2 is a reflexive relation on A then R1R2 is an irreflexive relation on A.
This one should be solved by contradiction...
thanks in advance for the help!



