21127 Lecture Notes - Lecture 20: Eed (Protein), Injective Function, Surjective Function

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Homework comments: if you collaborate with like 10 people at once and you all come up with the same mistake . you"re gonna have a bad time. Limit your collaborations to no more than 3 or 4 people at a time. Feel free to talk about the problems with several di erent people, but don"t get a huge group together in one room to work together. Groupthink happens, people: pay careful attention to the de nitions i give you in the notes, as well as how you use them. We"ve seen several mistakes that amount to just misunderstanding the de nition, which leads to a misinterpretation of the problem statement or some important part of the solution. Just talk to us if you want to reinforce a concept. Have an example and a non-example in mind for every de nition we discuss: there is nothing about the quanti er that says the objects you are quantifying need be distinct.