Function: algleftmultable
Section: algebras
C-Name: algleftmultable
Prototype: GG
Help: algmultable(al,x): left multiplication table of x.
Doc: Given an element \var{x} in \var{al}, computes its left multiplication
 table. If \var{x} is given in basis form, returns its multiplication table on
 the integral basis; if \var{x} is given in algebraic form, returns its
 multiplication table on the basis corresponding to the algebraic form of
 elements of \var{al}. In every case, if \var{x} is a \typ{COL} of length $n$,
 then the output is a $n\times n$ \typ{MAT}.
 Also accepts a square matrix with coefficients in \var{al}.

 \bprog
 ? A = alginit(nfinit(y), [-1,-1]);
 ? algleftmultable(A,[0,1,0,0]~)
 %2 =
 [0 -1  1  0]

 [1  0  1  1]

 [0  0  1  1]

 [0  0 -2 -1]
 @eprog
