Week 5

In this week we had our term test, which I found not that difficult, but I might got some wrong answers for lack of attention, I will have more certain with the result. Then, we continued learning about some proofs, for example the use of the contrapositive to prove the statement, or leading to the contradiction. We also had proof by existence and about a sentence. In the tutorial, we had proof structure, something that I do not recall having in class, but is quite easy and not that hard, is only necessary to unwrap the sentence and not actually prove something.