What a well-written, approachable article. if I understand right, the summary is basically, there is a certain way, an abstraction from geometry, you can use to

What a well-written, approachable article. if I understand right, the summary is basically, there is a certain way, an abstraction from geometry, you can use to mathematically describe electromagnetic fields. You can also use this certain geometric abstraction to describe how different types of mathematical abstractions are entangled, like electricity and magnetism are entangled