Editing Backslash (section)

===Mathematics===

A backslash-like symbol is used for the [[complement (set theory)|set difference]].<ref>{{cite web|title=Quantities and units – Part 2: Mathematical signs and symbols to be used in the natural sciences and technology|url=http://www.iso.org/iso/catalogue_detail?csnumber=31887|work=ISO 80000-2:2009| date=15 April 2008 |publisher=International Organization for Standardization|access-date=2012-10-07|archive-date=2014-03-26|archive-url=https://web.archive.org/web/20140326013017/http://www.iso.org/iso/catalogue_detail?csnumber=31887|url-status=live}}</ref>

The backslash is also sometimes used to denote the right [[coset]] space.<ref>{{cite web |title=Definition:Coset Space |url=https://proofwiki.org/w/index.php?title=Definition:Coset_Space&oldid=227233 |publisher=ProofWiki |access-date=1 February 2017 |archive-date=26 February 2021 |archive-url=https://web.archive.org/web/20210226163838/https://proofwiki.org/w/index.php?title=Definition:Coset_Space&oldid=227233 |url-status=live }}</ref>

Especially when describing computer algorithms, it is common to define backslash so that {{math|''a''\''b''}} is equivalent to {{math|{{floor|''a''/''b''}}}}.<ref>{{cite web|title=Integer Division|url=https://mathworld.wolfram.com/IntegerDivision.html|website=mathworld.wolfram.com|access-date=2020-03-10|archive-date=2020-02-21|archive-url=https://web.archive.org/web/20200221154259/http://mathworld.wolfram.com/IntegerDivision.html|url-status=live}}</ref> This is integer division that rounds down, not towards zero.

In [[MATLAB]] and [[GNU Octave]] the backslash is used for left [[Matrix division|matrix divide]], while the (forward) slash is for right matrix divide.<ref>{{cite web|last=Eaton|first=John W.|title=GNU Octave: A high-level interactive language for numerical computations|url=https://www.gnu.org/software/octave/octave.pdf|publisher=Free Software Foundation|access-date=7 October 2012|author2=David Bateman|author3=Søren Hauberg|page=145|date=February 2011|archive-date=24 October 2012|archive-url=https://web.archive.org/web/20121024061422/http://www.gnu.org/software/octave/octave.pdf|url-status=live}}</ref>