7 citations · 7 across the 4 of their papers we have counts for
4 papers
Ola Bratteli and his diagrams
Tone Bratteli, Trond Digernes, George Elliott +6
This article discusses the life and work of Professor Ola Bratteli (1946--2015). Family, fellow students, his advisor, colleagues and coworkers review aspects of his life and his o…
Brownian Motion and Finite Approximations of Quantum Systems over Local Fields
Erik M. Bakken, Trond Digernes, David Weisbart
We give a stochastic proof of the finite approximability of a class of Schrödinger operators over a local field, thereby completing a program of establishing in a non-Archimedean…
Finite Approximations of Physical Models over Local Fields
Erik Makino Bakken, Trond Digernes
We show that the Schrödinger operator associated with a physical system over a local field can be approximated in a very strong sense by finite Schrödinger operators. Some striking…
Models for the irreducible representation of a Heisenberg group
T. Digernes, V. S. Varadarajan
In its most general formulation a quantum kinematical system is described by a Heisenberg group; the "configuration space" in this case corresponds to a maximal isotropic subgroup.…