Brackets
Typed command(s) 
Symbol in Elements pane 
Meaning 
(...) 
Normal round left and right bracket 

[...] 
Left and right square bracket 

ldbracket ... rdbracket 
Left and right square double bracket 

lline ... rline 
Left and right vertical line 

ldline ... rdline 
Left and right double vertical lines 

lbrace ... rbrace 
Left and right curly brackets, set bracket 

langle ... rangle 
Left and right pointed bracket 

langle ... mline ... rangle 
Left and right pointed operator bracket 

{...} 
Left and right group bracket. They are not displayed in the document and do not take up any room. 

left( ... right) 
Brackets, scalable 

left[ ... right] 
Square brackets, scalable 

left ldbracket ... right rdbracket 
Double square brackets, scalable 

left lbrace ... right rbrace 
Braces, scalable 

left lline ... right rline 
Single lines, scalable 

left ldline ... right rdline 
Double lines, scalable 

left angle ... right angle 
Angle brackets, scalable 

left langle ... mline ... right rangle 
Scalable left and right pointed operator bracket 

overbrace 
Scalable curly set bracket on top 

underbrace 
Scalable curly set bracket below 

lfloor ... rfloor 
Left and right line with lower edges 

lceil ... rceil 
Left and right line with upper edges 

\lbrace \rbrace or \{ \} 
Left curly bracket or right curly bracket 

\( \) 
Left and right round bracket 

\[ \] 
Left and right square bracket 

\langle \rangle 
Left and right pointed bracket 

\lline \rline 
Left and right vertical line 

\ldline \rdline 
Left and right double line 

\lfloor \rfloor 
Left and right line with lower edges 

\lceil \rceil 
Left and right line with upper edges 

none 
Qualifier to suppress one bracket, as in right none 