4 citations · 4 across the 3 of their papers we have counts for
3 papers
math.FA2008★ 4 cited
Extensions of positive definite functions on amenable groups
M. Bakonyi, D. Timotin
Let be a subset of a amenable group such that and . The main result of the paper states that if the Cayley graph of with respect to has a certain…
math.FA2005
Extensions of positive definite functions on free groups
M. Bakonyi, D. Timotin
An analogue of Krein's extension theorem is proved for operator-valued positive definite functions on free groups. The proof gives also the parametrization of all extensions by mea…
math.CO2003
Research problem: The completion number of a graph
M. Bakonyi, T. Constantinescu
Motivated by the remarkable interplay between (chordal) graphs and matrix algebra, we associate to each graph a so-called completion number that might encode some aspects of that i…