$\underline{\text{In mathematics, you don't understand things. You just get used to them. - Von Neumann}}$

I'm currently a year $4$ undergraduate student at XJTLU doing my Final Year Project on Sheaf Theory and Schemes. My primary interest is Commutative Algebra. Here are some exercises (with solutions) that I wrote (moderately difficult level):

Exercises and Solutions in General Topology (active) & Exercises and Solutions in Discrete Mathematics (finished)

Exercises and Solutions in Complex Analysis (finished) & Exercises and Solutions in Measure Theory (finished)

I'd like to say thank you to Anh Quang Le and many users on MSE for their great help.

$\underline{\text{The beginner should not be discouraged if he finds he does not have the prerequisites for reading the}}$

$\underline{\text{prerequisites. - Paul Halmos}}$