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A relation says how two markets’ outcomes constrain each other. Routeur only states one when it follows from both contracts’ structured terms and exact arithmetic; wording is never enough, and ambiguous or conflicting evidence is withheld.

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Kinds

Read from the market you asked about: Lists of opportunities state relations from the left market’s side, as equivalent, subset, superset, contradicts or overlaps.

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How a relation is proven

1

Same variable

Both markets must measure the same real-world quantity with the same settlement scope: the same game and team, the same data series, the same event.
2

Outcome sets

Each market’s Yes is turned into a set of outcomes, such as “the 49ers score more than 10.5 points”, which is the interval (10.5, ∞).
3

Compare exactly

The sets are compared with exact rationals. (10.5, ∞) sits inside (3.5, ∞), so “over 10.5” implies “over 3.5”.
One-winner events add exclusions between their outcomes, and matched games across venues add equivalences.

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Reading relations

A relation is a constraint on prices. If a market implies another, its Yes should never cost more than the other’s Yes. When it does, there is a lead.