The necromancer of ba`al 'obh was held to be possessed of the spirit who spoke through him with a hollow voice.
For a single quantic of the first order (ab) is the symbol of a function of the coefficients which vanishes identically; thus (ab) =a1b2-a2bl= aw l -a1ao=0 and, indeed, from a remark made above we see that (ab) remains unchanged by interchange of a and b; but (ab), = -(ba), and these two facts necessitate (ab) = o.
Such slags contain S10 2 =3033%, Fe(Mn)O =27-50%, Ca(Mg, Ba)O =12-28%, and retain less than 1% lead and I oz.
It is remarkable that Mobius employs the symbols AB, ABC, Abcd In Their Ordinary Geometrical Sense As Lengths, Areas And Volumes, Except That He Distinguishes Their Sign; Thus Ab = Ba, Abc= Acb, And So On.
In the centre of the town stands Meshed (strictly Meshhed) `Ali, the shrine of `Ali, containing the reputed tomb of that caliph, which is regarded by the Shi`ite Moslems as being no less holy than the Ka`ba itself, although it should be said that it is at least very doubtful whether `Ali was actually buried there.