What does the \ symbol mean, please?

  • Thread starter pellman
  • Start date
666
2
... as in [tex]\bold{R}^2[/tex]\[tex]\{\bold{0}\}[/tex]

Used in context here http://books.google.com/books?id=4Y-ownk6ilsC&pg=PA70&lpg=PA70&dq=abraham+marsden+foundation+of+mechanics&source=bl&ots=KGabbhy6XM&sig=MNvhtxISRyHdHGC3waYvSZtd-qg&hl=en&ei=zOnKSfraKp_inQeShsjnCQ&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.
 
1,028
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.
 

CRGreathouse

Science Advisor
Homework Helper
2,818
0
Ditto. The LaTeX for that operator is \setminus.
 
666
2
Thanks and thanks.
 

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