What does $]a,b[$ mean?
15380
Notation for intervals
62255
Notation question: Subroup generated by two elements?
124116
What does the notation $\binom{n}{i}$ mean?
114360
What do ^ and $ mean in a regular expression?
17532
Why does Simplify[b-a] give -a+b and not b-a?
11423
Understand the meaning of `$_`
20163
Usage of brackets/parentheses
64104
What does `[ EXPRESSION ], [ ] and [OPTION` mean in `man test`?
5528
Difference between $:=$ and $=$
109219
How do the sets $\emptyset\times B,\ A\ \times \emptyset, \ \emptyset \times \emptyset $ look like?
145507
Is $K[a,b]=K(a,b)$ for algebraic $a, b$?
105247
what does $ mean here in JQuery
71795
What does the Bash operator <<< (i.e. triple less than sign) mean?
89177
$\operatorname{adj}(AB) = \operatorname{adj} B \operatorname{adj} A$
33542
When is $A- B = B- A$?
73300
How do `>` and `>>` work?
146260
Question about how to interpret arbitrary elements