[Lecture] Mathematical Logic - by Antonio Montalban
[Lecture] Mathematical Logic - Set Theory - by Antonio Montalban
Mathematical Proofs - A Transition to Advanced Mathematics by Gary Chartrand, Albert Polimeni, et al.
Principles of Mathematical Analysis by Walter Rudin
Understanding Analysis - by Stephen Abbott
[Lecture] Real Analysis - by Francis Su
Algebra - by Michael Artin
[Lecture] Abstract Algebra - by Benedict Gross
Topology by James Munkres
[Lecture] Point Set Topology by Prof Staecker
Algebraic Topology by Allen Hatcher
[Lecture] Algebraic Topology by Math at Andrews University
[Lecture] Algebraic Topology by Pierre Albin
Categories for the Working Mathematician by Saunders Mac Lane
[Lecture] Categories for the idle mathematician by Richard E Borcherds
Type Theory and Formal Proof: An Introduction by Rob Nederpelt and Herman Geuvers
Homotopy Type Theory: Univalent Foundations of Mathematics by The Univalent Foundations Program Institute for Advanced Study