A multicenter (LCAO) B-spline basis is described in detail, and its capabilities concerning
affording convergent solutions for electronic continuum states and wavepacket propagation are
presented. It forms the core of the Tiresia code, which implements static-DFT and TDDFT hamiltonians,
as well as single channel Dyson-DFT and Dyson-TDDFT descriptions to include correlation in
the bound states. Together they afford accurate and computationally efficient descriptions of photoionization
properties of complex systems, both in the single photon and strong field environments.
A number of examples are provided.
