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12:30 AM
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Q: How can I find out what versions of Safari work with this site?

m_goldbergBackground This site no longer runs on my browser, Safari 8.0.8, in a way that allows me navigate the site with usual navigation buttons found on the top of each page of the site. As of today, some of the buttons no longer appear and the ones that do don't execute properly when I click on them. ...

 
 
12 hours later…
12:54 PM
@J.M.needshelp. Are you there?
 
Is it expected that JoinAcross[{<|"a" -> 1, "b" -> 2|>}, {}, "a", "Left"] gives {}? It seems a bit strange to me...
 
1:43 PM
@yode I am now.
 
@J.M.needshelp. We are here
 
 
1 hour later…
2:50 PM
Hello everybody. Anyone knows the answer to this question? mathematica.stackexchange.com/questions/169977/…
 
 
5 hours later…
7:50 PM
I want to define a shortcut for a zero vector. Subscript[0, dim_] := Table[0, dim] seems to work and looks great, but it feels risky. Any thoughts?
Any potential side-effects from including in a package?
 
8:23 PM
@ChrisK I'd prefer to attach this to a Symbol that isn't Subscript. Much safe. As a quick, probably not best, idea you could do: \[ScriptV]0 /: Subscript[\[ScriptV]0, n_] := ConstantArray[0, n]
The nice thing about this is if done at package level it won't harm anything outside of the package. The question at this point, though, is why not just do something like \[EmptySet][n_] := ConstantArray[0, n]?
Some easily identifiable character with nice alias. And just make it a function.
 
@b3m2a1 Yeah, you're right. Maybe I'll go for ZeroVector[dim], in loose analogy to IdentityMatrix. Thanks!
 
8:39 PM
Anyone know how closely Mathematica's box-language follows the ideas of Knuth and Plass here? It seems to me like they ought to work in similar fashion, but I also know that Mathematica's mathematical typesetting is often seemingly lacking relative to TeX's.
 
 
3 hours later…
11:42 PM
@wesen Nope but here's a way to get started: mathematica.stackexchange.com/a/170016/38205
 

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