Boyko, the discussion is futile whenyou do not believe that I am serious. But note that the expression mc² has the dimension of energy. The expression cm² (= 1cm²) has the dimension of area. Neither of these expressions evaluate into a dimensionless number.
- Bo >________________________________ > Fra: Boyko Bantchev <boyk...@gmail.com> >Til: programm...@jsoftware.com >Sendt: 15:02 mandag den 10. december 2012 >Emne: Re: [Jprogramming] J v Python > >On 10 December 2012 08:19, Bo Jacoby <bojac...@yahoo.dk> wrote: >> Boyko, congratulations! You manage to convince yourself that cm² is not an >> expression even if mc² is an expression. I don't follow. 3m*2m=6m². That >> is simple algebra where m*m=m² . Nor do I know what you mean by 'pushing >> their meaning too far.' > >I know 'mc²' is an expression because it is present in a well-known >formula. Without that knowledge, I wouldn't know what it is at all. >I also know 'cm²' is a symbol – a label denoting some unit of measure. >Nothing in this label requires reading it as expression. > >I cannot believe that you are serious about not making difference >between an expression and a label (or a name, if you prefer). >---------------------------------------------------------------------- >For information about J forums see http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
