Before revision: "For any finite set of matrices there is a product of matrices in this set such that " In the above equation "" refers to the classical spectral radius of the matrix This conjecture, proposed in 1995, was proven to be false in 2003,.
After revision: "For any finite set of matrices there is a product of matrices in this set such that " In the above equation "" refers to the classical spectral radius of the matrix This conjecture, proposed in 1995, was proven to be false in