===== Trichotomous relation =====
==== Set ====
| @#55CCEE: context     | @#55CCEE: $X$ |

| @#FFBB00: definiendum | @#FFBB00: $ R\in\mathrm{TrichotomousRel}(X) $ |

| $ x,y\in X $ |

| @#55EE55: postulate   | @#55EE55: $ xRy \lor yRx\lor x=y $ |

==== Discussion ====
==== Parents ====
=== Subset of ===
[[Binary relation on a set]]