feat(untyped): standardization theorem for the lambda calculus#679
Merged
Conversation
Contributor
|
Looking for your next pr ! |
Contributor
|
Could you share your next PR related to "leftmost reduction"? |
Contributor
Author
|
Hi! @lengyijun My branch is still a bit too messy to share right now, but I expect to open the PR very soon. |
m-ow
force-pushed
the
standardization-theorem
branch
from
July 7, 2026 18:42
7f7a6cd to
93dfbbb
Compare
Contributor
Author
|
opened #700 :) |
chenson2018
requested changes
Jul 8, 2026
chenson2018
left a comment
chenson2018
left a comment
Collaborator
There was a problem hiding this comment.
This seems straightforward, just some style nitpicks.
…dReduction.lean Co-authored-by: Chris Henson <46805207+chenson2018@users.noreply.github.com>
…dReduction.lean Co-authored-by: Chris Henson <46805207+chenson2018@users.noreply.github.com>
…dReduction.lean Co-authored-by: Chris Henson <46805207+chenson2018@users.noreply.github.com>
…dReduction.lean Co-authored-by: Chris Henson <46805207+chenson2018@users.noreply.github.com>
…dReduction.lean Co-authored-by: Chris Henson <46805207+chenson2018@users.noreply.github.com>
…dReduction.lean Co-authored-by: Chris Henson <46805207+chenson2018@users.noreply.github.com>
…dReduction.lean Co-authored-by: Chris Henson <46805207+chenson2018@users.noreply.github.com>
…dReduction.lean Co-authored-by: Chris Henson <46805207+chenson2018@users.noreply.github.com>
…dReduction.lean Co-authored-by: Chris Henson <46805207+chenson2018@users.noreply.github.com>
…ame.lean Co-authored-by: Chris Henson <46805207+chenson2018@users.noreply.github.com>
Contributor
Author
|
Thanks a lot for the review! Let me know if anything else needs changing. |
chenson2018
approved these changes
Jul 9, 2026
chenson2018
left a comment
chenson2018
left a comment
Collaborator
There was a problem hiding this comment.
@m-ow Thanks! I did a little bit of miscellaneous cleanups myself, in the hope of getting to your next PR a bit quicker. You might have a look for future reference.
chenson2018
enabled auto-merge
July 9, 2026 04:02
intgrah
pushed a commit
to intgrah/cslib
that referenced
this pull request
Jul 14, 2026
…rover#679) This PR proves the standardization theorem: if `M` beta-reduces to `N` in any number of steps, then `N` is reachable from `M` by a standard reduction. Builds on leanprover#671. --------- Co-authored-by: Chris Henson <46805207+chenson2018@users.noreply.github.com> Co-authored-by: Chris Henson <chrishenson.net@gmail.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
This PR proves the standardization theorem: if
Mbeta-reduces toNin any number of steps, thenNis reachable fromMby a standard reduction.Builds on #671.