FUNCTION: Cartan - compute Cartan matrix

CALLING SEQUENCE:
Cartan()

PARAMETERS:
none

SYNOPSIS:

• Renders the Cartan matrix for the canonical algebra corresponding to the currently entered weight sequence.

• works for any weight type (not only tubular).

EXAMPLES:

> with(tubular):

> read_in(2,3,4); Cartan();

SEE ALSO: read_in, tubular/globalvars