2 papers
math.OA2018
Quasi-invariant measures for generalized approximately proper equivalence relations
R. Bissacot, R. Exel, R. Frausino +1
We introduce a generalization of the notion of approximately proper equivalence relations studied by Renault and with it we build an étale groupoid. Choosing a suitable set of cont…
math-ph2017
Dyson models under renormalization and in weak fields
R. Bissacot, E. O. Endo, A. C. D. van Enter +3
We consider one-dimensional long-range spin models (usually called Dyson models), consisting of Ising ferromagnets with slowly decaying long-range pair potentials of the form $\fra…