Upside down E was Re: Mathematical Symbols

[Laurence Horn]

At 11:40 AM -0500 2/20/03, James A. Landau wrote:
>
>As for "upside down", yes it makes sense to see you turn something upside
>down by rotating it on the roll axis, that is, by leaving it flat on the
>desktop while rotating it 180 degrees.

works for me

>If you do so to the capital F, you
>get the bars sticking out to the left.  However, what term would you then use
>to describe a capital F turned in such a way that the long horizontal bar was
>on the bottom and sticking out to the right?
>
Upside-down mirror-image (or vice versa) F

larry