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DAS/Relations.md
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@@ -41,6 +41,9 @@ Each possible sum creates it's own equivalence class. So there are $7$ equivalen
## Binary Relation
A binary relation is a relation $R$ between _exactly two_ elements $a in R$ and $b in R$. An example for a binary relation is $a <= b$
## Converse Relation
$C^top$ or $C^(-1)$ is the
## Orders
An **Order** is a mathematical way to sort, rank or compare elements within a set, where some elements come "before" and "after" others.