[latexrefman] \big, \bigg, etc.
Bob
solimeno at gmail.com
Wed Nov 7 19:34:08 CET 2018
Here's what I have for the delimiters and the /big family of commands
(attached). Arrows can be a much bigger topic (no pun, really), I think, as
there are a number of packages that have different sorts of arrows. Do we
want this to be a comprehensive description of arrows or constrained to a
topic?
Bob
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Standard Delimiters
Name variety Type (verbatim) Typeset
anglebracket left \langle \langle
anglebracket right \rangle \rangle
arrow double-downward \Downarrow \Downarrow
arrow double-up-and-down \Updownarrow \Updownarrow
arrow double-upward \Uparrow \Uparrow
arrow downward \downarrow \downarrow
arrow up-and-down \updownarrow \updownarrow
arrow upward \uparrow \uparrow
brace left \{ or \lbrace \lbrace
brace right \} or \rbrace \rbrace
bracket left [ or \lbrack \lbrack
bracket right ] or \rbrack \rbrack
ceiling left \lceil \lceil
ceiling right \rceil \rceil
corner lower-left \llcorner \llcorner
corner lower-right \lrcorner \lrcorner
corner upper-left \ulcorner \ulcorner
corner upper-right \urcorner \urcorner
floor left \lfloor \lfloor
floor right \rfloor \rfloor
parenthesis left ( (
parenthesis right ) )
slash back \backslash \backslash
slash forward / /
vertical double-line \| or \Vert \Vert
vertical line | or \vert \vert
\big, \Big, \bigg, and \Bigg;
\bigl, \Bigl, \biggl, and \Biggl;
\bigr, \Bigr, \biggr, and \Biggr
Synopsis:
\big<delimiter character>
Produce a larger size delimiter character that does not stretch. The commands produce increasingly large characters in the order with \big (bigger than normal), \Big (bigger than \big), \bigg (even bigger), and \Bigg (the biggest of them all). The \big family commands also provide alterntives for appending 'l' or 'r' to produce larger left and right (open and close) delimiters. The latter alternatives insert no space between a preceding atom and the delimiter while the former ordinary command inserts some space.
EXAMPLE(S)
Big vertical line:
\[ \int_a^b x^2\;\mathrm{d}x= \tfrac{1}{3} x^3 \Big|_a^b \]
Compare (ordinary):
\[ \sum\big(x+x^2+x^3 + \dots x^n) \]
with (open):
\[ \sum\bigl(x+x^2+x^3 + \dots x^n) \]
The latter case seems to produce a more pleasing typeset form.
Using \biggl and \biggr:
\[
\ddfrac{\sum_{i=1}^\infty \frac{1}{i^2}}{\int_{-\infty}^\infty
\frac{1}{\sqrt{2\pi\sigma^2}} \exp\biggl(-\frac{(x-\mu)^2}{2\sigma^2}\biggr)
\,\mathrm{d}x} &= \frac{\pi^2}{6}
\]
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