2 problems

Let $q_1$ and $q_2$ be two positive spherically symmetric potentials, and consider their fixed-energy phase shifts for all angular momenta. The positive-potential phase-shift conje…

Let a box-ball system have $n$ blocks, with $Q_k$ balls in the $k$-th block, and suppose the blocks are separated sufficiently so that the asymptotic soliton structure can be ident…