Articles by Friedrich Philipp:
OaM-07-44 | » Indefinite Sturm-Liouville operators with periodic coefficients (12/2013) |
OaM-09-30 | » Spectral points of type π+ and type π- of closed operators in indefinite inner product spaces (09/2015) |
OaM-11-20 | » The effect of perturbations of operator-valued frame sequences and fusion frames on their duals (06/2017) |