[comp.edu] Fractions/division

gwills@maths.tcd.ie (Graham Wills) (01/05/89)

In article <19252@shemp.CS.UCLA.EDU> verma@mahimahi.cs.ucla.edu (Rodent of Darkness) writes:
>	Speaking of division and "fractions" once had a teacher who
>	said that division and fractions had nothing to do with each
>	other.  To this day I have no idea as to why she said this.
>

Strictly speaking they are not any more similar than irrationals and square
roots. A fraction is a pair of numbers (numerator,denominator) used to denote
a rational number. It is an object. Division is a function which works on any
usual number system which "includes the rationals" e.g. irrationals, complex
numbers, quaternions. The similarity is that rationals were created/discovered
to enable you to do division at all.

Graham W.                     
TCD, Ireland.