Filters

Open TOTBWF opened this issue 1 month ago • 1 comments

Description

This PR defines filters in posets, and proves some basic facts about them.

I've also added some basic supporting infrastructure for directed sets. At some point we should port DCPOs over to use this, but this is probably best done in a separate PR.

Checklist

Before submitting a merge request, please check the items below:

[x] I've read the contributing guidelines.
[x] The imports of new modules have been sorted with support/sort-imports.hs (or nix run --experimental-features nix-command -f . sort-imports).
[x] All new code blocks have "agda" as their language.

If your change affects many files without adding substantial content, and you don't want your name to appear on those pages (for example, treewide refactorings or reformattings), start the commit message and PR title with chore:.

Dec 03 '25 19:12 TOTBWF

Pull request preview

New pages

Order.Filter (+284, -0)
Order.Directed (+176, -0)
Order.Filter.Instances.Eventuality (+142, -0)
Order.Instances.Upper (+59, -0)
Order.Instances.Elements.Covariant (+45, -0)

Changed pages

Dec 03 '25 19:12 Lavenza