FUNCTION: quaf - quadratic form for a K₀X -class of type quiver

CALLING SEQUENCE:
quaf(f)

PARAMETERS:
f - a K₀X -class of type quiver

SYNOPSIS:

• Computes the quadratic form for a K₀X -class of type quiver.

EXAMPLES:

> with(tubular):

> read_in(3,3,3);

> f1 := get_class([4/3,3,0,2]); f2 := get_class([4/3,3,0,3]);

> show(f1);

> quaf(f1);

> show(f2);

> quaf(f2);