isTight Q
isTight(Q, W)
isTight(W, Q)
isTight(W, Q, Format => "Flow")
isTight(W, Q, Format => "Weight")
A toric quiver $Q$ is tight with respect to a given flow if there is no maximal unstable subquiver of codimension 1. That is, every unstable subquiver of $Q$ has at most $|Q_1|-2$ arrows. This method determines if a toric quiver $Q$ is tight with respect to the vertex weights induced by its flow.
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The object isTight is a method function with options.