I've the following relation:
$(x,y) \in A \times B, x S y ↔ 2|(x-y)$
What does $2|(x-y)$ mean?
Thank you.
2026-04-11 21:54:48.1775944488
Discrete Maths: I'm not familiar with this notation
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It means 2 divides $(x-y)$.
Which is to say that there is an integer $c$ such that $2c = (x-y)$