Showing math.DGShow all
3 papers · 1 filter
math.DG2025
Chern-Weil theory for Haefliger-singular foliations
Lachlan Ewen MacDonald, Benjamin McMillan
We give a Chern-Weil map for the Gel'fand-Fuks characteristic classes of Haefliger-singular foliations, those foliations defined by smooth Haefliger structures with dense regular s…
math.DG2024
The range of a connection and a Calabi operator for Lorentzian locally symmetric spaces
Federico Costanza, Michael Eastwood, Thomas Leistner +1
For semi-Riemannian manifolds of constant sectional curvature, the Calabi operator is a second order linear differential operator that provides local integrability conditions for t…
math.DG2024
A characterization of Pfaffian embeddings from (2, 3, 5)- into flat (4, 7)-geometries
Benjamin McMillan
Given two smooth manifolds with tangent subbundle distributions, an embedding is Pfaffian if its differential sends the distribution on the source into the distribution on the targ…