4:16 AM
Should we created tag? Currently many questions related to simplex method are tagged . There are 134 questions tagged simplex+linear-programming.
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Let "stable operation" be an operation on a simplex tableau such that the entering variable has a reduced cost of 0. Recall that a pivoting operation will not change the objective value if either the reduced cost (i.e. in the $\bar c$ row shown below) is 0, or if the leaving variable has value 0 ...

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I can't understand the essence of basis in simplex method. What I know that in simplex method each time from Corner Point Feasible (CPF) solution we go in the direction of the axis with higher coefficient (assume we are maximizing objective function). It is all good while our feasible region is b...

12 hours later…
4:37 PM
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Recently a tag has been created http://math.stackexchange.com/questions/tagged/converse-of-propositions There is no description and only 3 questions by the same user. I think this tag should be closed/deleted. I do not see any options of doing it, maybe because I do not have sufficient reputati...

6:23 PM
Some comments on meta related a bit to this:

### Removing tags without bumping (by merging)

Jan 7 at 13:50, 41 minutes total – 7 messages, 1 user, 0 stars

Bookmarked Jan 7 at 21:32 by Martin Sleziak

I'm curious what you mean by "Moderators can remove tags in bulk." — arjafi ♦ 14 mins ago
@arjafi Perhaps merging without synonymizing - like it was done here. Of course, this means that all questions are retagged by the same tag, so it is not always possible. That's the only thing I can think of - but I will be glad to learn about other possibilities, if they exist. — Martin Sleziak 6 mins ago
@arjafi I edited to clarify. I was admittedly not a as precise as it should have been. — quid 55 secs ago
As a reaction to arjafi's comment, quid change the wording to this: "Network-wide moderators can actually delete tags, and per-site moderators can at least replace at once and without bumps all occurrence of a given tag by a different one (which is sometimes sufficient to get rid of an undesirable tag)."
Perhaps now after the edit the above comments can be removed. But I will wait a bit to see whether the discussion continues in the comment (or here).

6:37 PM
@MartinSleziak That was my suspicion, too. But that's really only an option if there's an appropriate tag to merge everything into. Merging converse-of-propositions into stupid-tag-that-ought-to-be-deleted would be at best a lateral move. — arjafi ♦ 51 secs ago
@quid Thanks for clarifying. I'll clear out these now-obsolete comments in a little while. — arjafi ♦ 36 secs ago
I am aware that on MathOverflow is used for this purpose: chat.stackexchange.com/transcript/10243/2017/1/17 But I do not think that it is an optimal solution.