Hello!

I’m currently reading docs on chia plotting mechanics (https://www.chia.net/assets/Chia_Proof_of_Space_Construction_v1.1.pdf) and I wonder if someone can help me to understand certain things about it.

Paragraph “Compressing Entry Data”

A line is a set of tuples (x,y). Then why do we say that x(x-1)/2 + y resides on line (second from the bottom formula)

Since

x(x-1)/2 + y

results in a single value, not a tuple, how it can reside on a line? Or I get something wrong?

(sorry, can’t provide more screens due to newbie limitations)