What do we need topology for? Is it for GR? And same for abstract algebra? is this about the symmetries in high-energy physics? I agree with you in general tha

What do we need topology for? Is it for GR? And same for abstract algebra? is this about the symmetries in high-energy physics? I agree with you in general that one needs to learn serious math to advance in physics, but it's always exciting to see university-level physics simplified for the high school audience. Matrix QM is uniquely good candidate since it only requires knowledge of linear algebra (see for example Figure 6, at the bottom of page 4 here https://minireference.com/static/tutorials/conceptmap.pdf#page=4 https://minireference.com/static/tutorials/conceptmap.pdf#pa... ).