12 citations · 17 across the 2 of their papers we have counts for
3 papers
gr-qc1995★ 5 cited
Obstructions to Pin Structures on Kleinian Manifolds
L. J. Alty, A. Chamblin
We develop various topological notions on four-manifolds of Kleinian signature . In particular, we extend the concept of `Kleinian metric homotopy' to non-orientable man…
gr-qc1995★ 12 cited
Initial Value Problems and Signature Change
L. J. Alty, C. J. Fewster
We make a rigorous study of classical field equations on a 2-dimensional signature changing spacetime using the techniques of operator theory. Boundary conditions at the surface of…
hep-th1993
Spin Structures on Kleinian Manifolds
Lloyd Alty, Andrew Chamblin
We derive the topological obstruction to spin-Klein cobordism. This result has implications for signature change in general relativity, and for the superstring.