Implement the Feichtner-Yuzvinsky rings for lattices #35472
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fchapoton
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Apr 12, 2023
fchapoton
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Apr 14, 2023
add missing \
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Documentation preview for this PR is ready! 🎉 |
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@fchapoton Thank you for pushing that fix (I was away from a development computer this weekend). Your change LGTM. If everything else is fine, then please approve and set to a positive review. |
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Thank you. |
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📚 Description
We provide an implementation of the Feichtner-Yuzvinsky ring of a lattice$L$ and a subset $G \subseteq L$ . Our implementation is a slight generalization of the original definition to let $G$ be arbitrary. This is a commutative ring associated to a lattice as the quotient of $R[h_g | g \in G]$ by all $h_a$ for $a \in G$ an atom of $L$ and
where$A$ is an antichain of $G$ such that $g := \bigvee A \in G$ .
📝 Checklist
⌛ Dependencies