I am a 3rd year undergraduate student. What are the things that would be good to know if I apply for PhD? I want to do a PhD in non-commuative topology.
I am fascinated by this non-commutative aspect. I have no knowledge of $K$-theory or $C^{\ast}$-algebras yet. I have read Hatcher upto homology. I am reading differential geometry fromm S. S. Chern and in analysis I am studying from Rudin's Real and Complex Analysis as well as Functional Analysis.
How much should I read in order to understand and from which books in order to understand non-commutative geometry fully?