The inverse spectral problem for first order systems on the half line

Matthias Lesch, Mark M. Malamud

On the half line $[0,\infty )$ we study first order differential operators of the form $B1/id/(dx)+Q(x)$, where $B:=\mat{B_1}{0}{0}{-B_2}$, $B_1,B_2\in M(n,\C)$ are self--adjoin…