Am Montag, 27. Oktober 2008 12:35 schrieb Achim Schneider: > Daniel Fischer <[EMAIL PROTECTED]> wrote: > > Am Montag, 27. Oktober 2008 11:46 schrieb Henning Thielemann: > > > I also know a didact which tells teachers that 1 has no prime > > > decomposition. Oh, I see, she may have copied that from Wikipedia: > > > http://en.wikipedia.org/wiki/Prime_factorisation > > > > I can believe that makes sense to somebody who considers 0 an > > unnatural number, an empty product must be frightening for them. > > That is just mathematical trickery and dodgery, silently defining 1 as > prime by including it (even infinitely many times!) in any prime > factor,
Who does such horrible things? Repeat after me: 1 is NOT a prime. Never, under no circumstances. > denying its existence there (by defining all units to be > non-prime) and then calling the whole algebra paradox-free, hoping that > noone notices. _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe