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Intuitively | Intuitively '''positive arrows''' denote outward directed operations while '''negative arrows''' denote inward directed ones. | ||
<ref> | <ref> | ||
The arrow syntax is unambiguous because variables can always be distinguished from atoms and an atom without polarity does not occur anywhere else in the syntax. | |||
</ref> | </ref> | ||
Both arrows are right associative. | Both arrows are right associative. |
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