The Comprehensive LaTeX Symbol List

↓〈⌈⌊(/⏐↓〈\downarrow ⇓\langle 〉⌈\lceil ⌉⌊\lfloor ⌋(( )// \Table 141: Variable-sized Delimiters[⇑⇓ \Downarrow [ [ ]〉\rangle | ∣ | ‖⌉↑\rceil↑ ⏐ \uparrow ⇑⌋↑⏐\rfloor↕ ↓ \updownarrow ⇕){) { \{ }∖\backslash]]∥ \|⇑ \Uparrow⇑⇓ \Updownarrow}\}When used with \left and \right, these symbols expand to the height of theenclosed math expression. Note that \vert is a synonym for |, and \Vert is asynonym for \|.ε-TEX provides a \middle analogue to \left and \right. \middle can be used, forexample, to make an internal “|” expand to the height of the surrounding \left and\right symbols. (This capability is commonly needed when typesetting adjacentbras and kets in Dirac notation: “〈φ|ψ〉”). A similar effect can be achieved inconventional L A TEX using the braket package.⎧⎭⏐Table 142: Large, Variable-sized Delimiters⎧⎧⎫ ⎧⎫⎪⎭ \lmoustache ⎩⎫⎪ ⎩ \rmoustache ⎩ ⎪⎩ \lgroup ⎭⎫⎪ ⎭ \rgroup⏐\arrowvert⇑⇑ \Arrowvert ⎪⎪\bracevertThese symbols must be used with \left and \right. The mathabx package, however,redefines \lgroup and \rgroup so that those symbols can work without \leftand \right.Table 143: AMS Variable-sized Delimiters|∣ \lvert |∣\rvert‖∥ \lVert ‖∥\rVertAccording to the amsmath documentation [AMS99], the preceding symbols areintended to be used as delimiters (e.g., as in “|−z|”) while the \vert and \Vertsymbols (Table 141) are intended to be used as operators (e.g., as in “p|q”).Table 144: stmaryrd Variable-sized Delimiters \llbracket \rrbracket53