FUNCTION: tctubes - compute the mouths of the exceptional tubes of a tame concealed bound poset algebra
CALLING SEQUENCE:
tctubes(p)
p - a bound poset algebra
SYNOPSIS:
EXAMPLES:
>
d:=[7,{[1,3],[3,2,4],[4,5],[5,6],[7,5]}];
>
l:=tctubes(d);
>
l[1];
>
l[2];
>
l[3];
SEE ALSO: iscriticald, iscriticale
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