| relation | The abstract class for FSet relations. It is a structure class. |
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| wb-2-relation | A class of functional binary relations represented as pairs of weight- balanced binary trees. Th... |
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| arity | Returns the arity of the relation rel. |
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| closure | The transitive closure of the set over the relation. The relation may also be supplied as a func... |
| convert | Converts the collection to the specified type. Some methods may take additional keyword argument... |
| compare | Returns one of :less, :greater, :equal, or :unequal according as xis less than, greate... |
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