https://piped.video/watch?v=f5liqUk0ZTw
I think I understand the rank one and rank two systems, but I’m not clear about what the 3rd represents on a Cartesian plane.
My mental model involves tying concepts to CAD design and assemblies. I am coming from FreeCAD where picking origins and designing everything on planes is critical.
The thing that I really don’t understand about tensors yet is how the origins are derived and relate with different objects in 3d space. I want to assume R3 relates to the origin but I am not sure.
Lemmy.ml has a math community with some clueful posters too. I can understand wanting to avoid stack exchange and Reddit. Wikipedia’s math reference desk is still ok though, albeit less active than it used to be.