21 citations · 103 across the 27 of their papers we have counts for
3 papers · 1 filter
Inverse problems for Jacobi operators III: Mass-spring perturbations of semi-infinite systems
Rafael del Rio, Mikhail Kudryavtsev, Luis O. Silva
Consider an infinite linear mass-spring system and a modification of it obtained by changing the first mass and spring of the system. We give results on the interplay of the spectr…
Inverse problems for Jacobi operators II: Mass perturbations of semi-infinite mass-spring systems
Rafael del Rio, Mikhail Kudryavtsev, Luis O. Silva
We consider an inverse spectral problem for infinite linear mass-spring systems with different configurations obtained by changing the first mass. We give results on the reconstruc…
The spectra of selfadjoint extensions of entire operators with deficiency indices (1,1)
Luis O. Silva, Julio H. Toloza
We give necessary and sufficient conditions for real sequences to be the spectra of selfadjoint extensions of an entire operator whose domain may be non-dense. For this spectral ch…