Krein-Šmul'jan Theorem Revisited

Santiago gonzalez Zerbo, Alejandra Maestripieri, Francisco Martínez Pería

We present a generalization of Krein-Šmul'jan theorem which involves several operators. Given bounded selfadjoint operators $A,B_1,\dots ,B_m$ acting on a Hilbert space $\mathcal{H…