I’m not entirely sure of that to be honest with you. I seem to remember than counterintuitively you can embed a flat torus in 3D but it goes further than my kno

I’m not entirely sure of that to be honest with you. I seem to remember than counterintuitively you can embed a flat torus in 3D but it goes further than my knowledge. It means it’s not a “small” hypersphere, that’s for sure.