8 citations · 9 across the 3 of their papers we have counts for
3 papers
math-ph2018★ 1 cited
Gaps in the spectrum of a cuboidal periodic lattice graph
Ondřej Turek
We locate gaps in the spectrum of a Hamiltonian on a periodic cuboidal (and generally hyperrectangular) lattice graph with couplings in the vertices. We formulate sufficient co…
math.CO2016★ 8 cited
A generalization of circulant Hadamard and conference matrices
Ondřej Turek, Dardo Goyeneche
We study the existence and construction of circulant matrices of order with diagonal entries , off-diagonal entries and mutually orthogonal rows. These…
math-ph2015
On quantum graph filters with flat passbands
Ondřej Turek
We examine transmission through a quantum graph vertex to which auxiliary edges with constant potentials are attached. We find a characterization of vertex couplings for which the…