James Livingston wrote: > On 27/03/2009, at 9:24 AM, Maciej Piechotka wrote: >> i * j = k >> -j * i = k >> >> k/i = j or -j? > > Do you mean left-divide or right-divide? In the first equation you are > left-multiplying by i, the latter you are right-multiplying by i. "k / > i" is ambiguous as to which it means. > > http://en.wikipedia.org/wiki/Quaternion#Conjugation.2C_the_norm.2C_and_division > > > Cheers, > James
Yes. I mean that left-division is not equivalent of right-division. There is something like left-division and right-division but not division[1]. It might be different however in anglosaxon nomenclature. Regards [1] Similarly function f(x) = |x| is not differentiable in 0 - althought it has left and right derivatives. -- I've probably left my head... somewhere. Please wait untill I find it. Homepage (pl_PL): http://uzytkownik.jogger.pl/ (GNU/)Linux User: #425935 (see http://counter.li.org/) _______________________________________________ Vala-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/vala-list
