2 papers
quant-ph2018
Quantum Weak Coin Flipping
Atul Singh Arora, Jérémie Roland, Stephan Weis
We investigate weak coin flipping, a fundamental cryptographic primitive where two distrustful parties need to remotely establish a shared random bit. A cheating player can try to…
math.AG2017
On a theorem by Kippenhahn
Stephan Weis
Kippenhahn discovered a real algebraic plane curve whose convex hull is the numerical range of a matrix. The correctness of this theorem was called into question when Chien and Nak…