Preorder
QUESTION
Preorder
Click to reveal answer ANSWER
A relation $\le$ on $X$ that is:
- **Reflexive**: $x \le x$
- **Transitive**: $(x \le y) \land (y \le z) \implies x \le z$
Click to see question - ソースノート: chapter1.md
- カードID: preorder
- 状態: active