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Questions of the kind "What's the name for a X that satisfies property Y?"
29
votes
Terminology: A "corollary" to a proof?
It's hard to know exactly what the best way to write your paper is without more details. But I can see the following structure being commonly and effectively used:
Theorem If [condition P] then [concl …
4
votes
Accepted
Name for generalization of trees to digraphs
I learned this terminology from Section 2.5 of "CoEulerian graphs" by Matthew Farrell and Lionel Levine (https://doi.org/10.1090/proc/12952). …
5
votes
Accepted
does this relation associated with a poset have a name?
It appears that there is no established name for this concept, but if you are looking for a suggestion, "potential covers" might be a reasonable name, since these are precisely the pairs $(x,y)$ which …
15
votes
Great polyhedra: What does "great" signify?
Quoting Wikipedia: https://en.wikipedia.org/wiki/Stellation#Naming_stellations
John Conway devised a terminology for stellated polygons, polyhedra and polychora (Coxeter 1974). …
32
votes
Accepted
Who is Mrs. Gerber?
Check out the original reference "A theorem on the entropy of certain binary sequences and applications - I" by Wyner and Ziv: https://doi.org/10.1109/TIT.1973.1055107. Footnote 2 on page one explains …
9
votes
Why aren't $B_n$ and $C_n$ the other way around?
"Historical convention" (going back to Lie?) is probably the correct explanation, but note that under what I would call the "standard combinatorial folding procedure" as described by Stembridge in Fol …
1
vote
Terminology introduced in recent years with more than one meaning
This is not quite a direct conflict of terminology, but it is a confusing near conflict of terminology, and it happened in the past twenty years:
The generalized permutohedra are a class of convex polytopes …