Set systems {monotonic set} can have previous sets contained in next sets.
Sets {ordered set} can have elements that follow trichotomy and transitivity relations. Sets {partially ordered set} can have elements that follow trichotomy and transitivity relations.
Relation between second coordinate and first coordinate can be same as relation between first coordinate and second coordinate {reflexive set}.
Relation between second coordinate and first coordinate can be from higher to lower {transitive set}.
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Date Modified: 2022.0225