- Countability
- Induction
My understanding is that if you can find some ways or methods to creates a responsibility of two sets one as input and the other one as output. With the dint of one-to-one and onto, we can compare every functions with nature numbers' set which is acting like a criteria for determining other sets' countability.
Besides, Induction is familiar to me as it is a very powerful method in matehmatics. We can use it to prove some very weird and interesting mathematical properties not only in math but also in CS.
To my mind, CSC165 really inspired me a lot about CS and lead me to explorer many interesting aspects of it. Thanks for Dr Heap and Dr Larry and all TAs, they really do an excellent job.