Predomains #2811
Closed
Predomains #2811
Conversation
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
jamesmckinna
added
the
status: duplicate
|
Closing this now in the interests of not further muddying the water. |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
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Outdated suggestions cannot be applied.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.
Intended for comparison only with #2721 / #2809 by way of offering an 'alternative' (simpler?) design...
NB I'd be very tempted to refactor eg
UpperBoundandMinimalUpperBoundAbovein terms of intersection-closed predicates, ie to develop a theory of objects '≤-minimal such thatP' for predicatesPunder suitable closure conditions, but that's a tale for another day, as well as the theory of 'inclusions' between DC-'subsets' of a given preorder, so that the various lubs/mubs could be compared according to their indexing setsI... etc.UPDATED: definition of Mub might require the additional precondition that
xis a lower bound for the image off, to rule out nonsensical definitions... oops!