31 citations · 37 across the 3 of their papers we have counts for
Showing 2004Show all
2 papers · 1 filter
cond-mat.other2004★ 31 cited
Voting in the European Union: The square root system of Penrose and a critical point
Karol Zyczkowski, Wojciech Slomczynski
The notion of the voting power is illustrated by examples of the systems of voting in the European Council according to the Treaty of Nice and the more recent proposition of the Eu…
quant-ph2004★ 6 cited
On duality between quantum maps and quantum states
Karol Zyczkowski, Ingemar Bengtsson
We investigate the space of quantum operations, as well as the larger space of maps which are positive, but not completely positive. A constructive criterion for decomposability is…