58 citations · 116 across the 14 of their papers we have counts for
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math.FA2009
Frames generated by actions of countable discrete groups
Kjetil Roysland
We consider dual frames generated by actions of countable discrete groups on a Hilbert space. Module frames in a class of modules over a group algebra are shown to coincide with a…
math.ST2009★ 35 cited
A martingale approach to continuous-time marginal structural models
Kjetil Røysland
Marginal structural models were introduced in order to provide estimates of causal effects from interventions based on observational studies in epidemiological research. The key po…