These are some aberrant notes on combinatorics.
We approach bipartite graphs (in particular, set systems) with model theory in the back of our mind.
Notation is borrowed from logic (without any clear purpose) and is used consistently throughout the notes - even when it obscures theorems and bloats proofs.
They may be aberrant also for other reasons that I am not aware of.
Finally, the title is a pun intended for Italian speakers.