# Re: Computer Language Question

From: | Dennis Paul Himes <himes@...> |

Date: | Tuesday, December 3, 2002, 18:41 |

"P. M. Arktayg" <pmva@...> wrote:
>
> Keith ta nugatu-r:
>
> > Well FORTH and its derivatives (Postscript and the Klingon computer
> > language) work just like this. It's called "Reverse Polish Notation" --
> > anyone know why?
>
> This method was invented by Polish mathematician Jan L/ukasiewicz.

More precisely, L/ukasiewicz invented Polish Notation. Reverse Polish
Notation is just Polish Notation written backwards. I first encountered
Polish notation while studying symbolic logic; certain proofs are easier
when well-formed formulas are written in Polish Notation. The notation is
reversed when used for calculation because then it's easy to process the
formula by pushing/pulling tokens and values on/off a stack.
===========================================================================
Dennis Paul Himes <> himes@cshore.com
http://home.cshore.com/himes/dennis.htm
Gladilatian page: http://home.cshore.com/himes/glad/lang.htm
Disclaimer: "True, I talk of dreams; which are the children of an idle
brain, begot of nothing but vain fantasy; which is as thin of substance as
the air." - Romeo & Juliet, Act I Scene iv Verse 96-99