2023年2月6日月曜日

Euclidean distance

This is taxicab geometry. You move from X to Y. Each square is 1.

Red:1+2+2+1+2+2=10



Green:5+5=10



They are the same line.
This is called Manhattan distance. n is the dimension.
Then, this is Euclidean norm.
This is 1*1 squares.



There are 25 suares, so K=25. √50≒7.07.

50=5^2+5^2. This is the green.

2023年2月5日日曜日

Approximate Carathéodory’s Theorem

Higher dimensions are chaotic. However, you close to Zero, although you keep expanding.
This is almost 1-1=0. k go to ∞, which is called Euclidean norm.
Then you pile squares.
They are almost circles, and cubes are also balls. They are closed.
However, higher dimensions are opened, so they are chaotic.