Approximate graph colouring and the hollow shadow

We show that approximate graph colouring is not solved by constantly many levels of the liftand-project hierarchy for the combined basic linear programming and affine integer programming relaxation. The proof involves a construction of tensors whose fixed-dimensional projections are equal up to refl...

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Những tác giả chính: Zivny, S, Ciardo, L
Định dạng: Conference item
Ngôn ngữ:English
Được phát hành: Association for Computing Machinery 2023