Combinatorics
Tuesday, January 17
Blackboards
- Permutations
- Factorials
- Binomial coefficients
- Binomial theorem
Thursday, January 19
Blackboards
- Fixed point free permutations
- Pascal’s triangle recurrence
- Lattice paths
- Inclusion exclusion
Suggested reading
I particularly recommend these expositions, from easy to advanced:
You may prefer these expositions:
Along the way, try exercises that look interesting to you.