What does the \ symbol mean, please?

  • Thread starter pellman
  • Start date
  • #1
675
4
... as in [tex]\bold{R}^2[/tex]\[tex]\{\bold{0}\}[/tex]

Used in context here http://books.google.com/books?id=4Y...hsjnCQ&sa=X&oi=book_result&resnum=1&ct=result top of the page.

I've previously seen the notation [tex]\bold{R}^2-\{\bold{0}\}[/tex] for the cartesian plane with the origin excluded, so I hesitated to assume that the above notation meant the same thing.
 

Answers and Replies

  • #2
1,030
4
It means the same thing as R - {0} Actually "X - Y" as is an old notation back when the term "set arithmetic" was still used. So the modern notation is X\Y.
 
  • #3
CRGreathouse
Science Advisor
Homework Helper
2,824
0
Ditto. The LaTeX for that operator is \setminus.
 
  • #4
675
4
Thanks and thanks.
 

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