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Local invariants on quotient singularities and a genus formula for weighted plane curves
Local invariants quotient singularities genus formula weighted plane curves Algebraic Geometry
2012/6/30
In this paper we extend the concept of Milnor fiber and Milnor number of a curve singularity allowing the ambient space to be a quotient surface singularity. A generalization of the local {\delta}-inv...
Local Invariants for a Class of Tripartite Quantum Mixed States
tripartite quantum states local unitary transformations entanglement invariants
2007/8/15
2006Vol.45No.2pp.262-266DOI:
Local Invariants for a Class of Tripartite Quantum Mixed States
WANG Xiao-Hong
Department of Mathematics, Capital Normal University, Beijing...
We study invariants of three-qubit states under local unitary transformations,i.e. functions on the space of entanglement types, which is known to have dimension 6. We show that there is no set of six...