How is $\displaystyle \Delta I$ defined for $\displaystyle I$ some interval on $\displaystyle \mathbb{R}$? Is it just $\displaystyle sup(I)-inf(I)$, that is, the Supremum of the interval minus the Infimum?

Thanks in advance.

Printable View

- Oct 23rd 2009, 06:44 AMSwlabrNotation Question
How is $\displaystyle \Delta I$ defined for $\displaystyle I$ some interval on $\displaystyle \mathbb{R}$? Is it just $\displaystyle sup(I)-inf(I)$, that is, the Supremum of the interval minus the Infimum?

Thanks in advance. - Oct 23rd 2009, 07:23 AMHallsofIvy