From: Rudolf Polzer <denshimeiru-sapmctacher@...>
Date: 2003-08-24T19:42:01+09:00
Subject: Re: POLS and names of mathematical functions

Scripsit ille �Josef 'Jupp' Schugt� <jupp@gmx.de>:
> Saluton!
> 
> Implementing some additional mathematical functions I came across
> acosh, asinh, and atanh. Here the Principle of Least Surprise runs
> into a severe problem.
> 
> On the one hand it is not that uncommon to use these names. On the
> other hand mathematicians prefer to call them arcosh, arsinh and
> atanh.

Here (Frankfurt) they're called arcosh or arccosh (I saw both), arcsinh
and arctanh. But it may depend on the professor.

> What about allowing for *both* names in later versions of Ruby?

Now there are *three* names.


-- 
   [11] "My Last Theorem: A Prankster's Guide to Ageless Mathematical
        Jokes That are Funny Because They're True and People Can't Prove
        Them for Centuries."  P. Fermat.  Circa 1630.
                                                                        RFC 2795