FUNCTION: cartanm - compute the Cartan-matrix of a bound poset algebra

CALLING SEQUENCE:
cartanm(p)

PARAMETERS:
p - a bound poset algebra

SYNOPSIS:

EXAMPLES:

> a:=critical_alge(7,14);

[Maple Math]
[Maple Math]

> cartanm(a);

[Maple Math]

SEE ALSO: coxeterm, eulerform

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