ternary relation in ERD diagram

  Kiến thức lập trình

(https://i.sstatic.net/51Qnz1IH.png)
‘Please see ERD image’
I have a couple of questions :
1- I know that I can represent the relation ship many to many with m to m,
so what is m to n in the ternary relation ship and can i use it in a binary or unary relation ship and what does it mean also
2- What is m to k and and can I use it in binary or unary relation ships.

I asked google but did not find a good answer.

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