Semi-invariants of ∗-representations of quivers
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چکیده
The notion of ∗-representations of quivers can be obtained from ordinary quiver representations by considering coaction of groups on “vertex” vector spaces together with action. A generating system for the algebra of semiinvariants of ∗-representations of a quiver is determined. This was done by reducing the problem to the case of bipartite quivers of the special form and by introducing a function DP on three matrices which is a mixture of the determinant and two pfaffians.
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تاریخ انتشار 2005