THIS IS NOT HOMEWORK! This is a practice problem from our textbook. Class link: Discrete Math I
1) "By the definition of R we see that there are no ordered pairsin R where the first entry of one and the second entry of another is the
I do not understand what the definition of R is, nor what they mean by the first entry of one and the second entry of another is the same.
2) "...so the hypothesis, ..., cannot be true."
Maybe because I do not understand #1 above, I also do not understand this conclusion.
3) "...this shows that the implication is true"
I obviously do not understand this either.
Any clarification would be greatly appreciated. Thank you!