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Events at the Department of Mathematical Sciences.
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14 Jan. 2015, 12:00-13:00
Quantum Lunch: Finding large gaps between tensor rank and border rank via algebras
Abstract: In quantum information theory, it is well-known that the GHZ-state 000+111 cannot be (SLOCC-)transformed into the W-state 000+101+011, but the W-state can be approximated with states from the GHZ-orbit. The W-state is thus an example of a tensor of tensor rank 3 that can be approximated by tensors of tensor rank 2....
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14 Jan. 2015, 12:05-13:00
SYM lecture: When does a group act properly on a contractible n-manifold?
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