Standard results omitting tedious derivations is a standard practice in all educational material of upper level physics. "Derivation left to reader", etc. I per

Standard results omitting tedious derivations is a standard practice in all educational material of upper level physics. "Derivation left to reader", etc. I personally greatly enjoy the fact that i get to decide how much detail i want. I can get the gist, a moderate exploration, or a deep dive if i have the time. Keep in mind, this person did not have to make this resource, and if you don't like it you don't have to read it. I greatly appreciate a breadth of resources when learning a topic and this is an amazing addition to my learning resources. If you absolutelyneed every single detail of every single assertion then look it up, but i can never expect a human doing this in their free time as a free gift to write dozens of textbooks about every facet of physics. Keeping every single detail in would make these prohibitively time consuming to create in a way that i don't think a free resource could support