Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » Math Topics » discretemath

Topic: Set Theory
Replies: 3   Last Post: Oct 9, 2011 2:51 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Marcos

Posts: 1
Registered: 10/9/11
Set Theory
Posted: Oct 9, 2011 10:18 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply
Discrete Math.docx (576.1 K)

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 R1-R2 is an irreflexive relation on A.

This one should be solved by contradiction...

thanks in advance for the help!


Date Subject Author
10/9/11
Read Set Theory
Marcos
10/9/11
Read RE: Set Theory
Ben Brink
10/9/11
Read RE: Set Theory
Ben Brink
10/9/11
Read RE: Set Theory
Ben Brink

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.