%0 Journal Article %T On orthogonal systems in Hilbert C*-modules %A Giovanni Landi %A Alexander Pavlov %J Mathematics %D 2009 %I arXiv %X Analogues for Hilbert C*-modules of classical results of Fourier series theory in Hilbert spaces are considered. Relations between different properties of orthogonal and orthonormal systems for Hilbert C*-modules are studied with special attention paid on the differences with the well-known Hilbert space situation. %U http://arxiv.org/abs/0906.0822v1