TY  - GEN 
AU  - Sánchez Caja, Miguel
PY  - 2023
UR  - https://hdl.handle.net/10481/91499
AB  - We construct globally hyperbolic spacetimes such that each slice {t=t0​} of the universal time t is a model space of constant curvature k(t0​) which may not only vary with t0​∈R but also change its sign. The metric is smooth and slightly different to...
LA  - eng
PB  - EMS Press
KW  - Cosmological models
KW  - Space topology change
KW  - Constant curvature
TI  - A class of cosmological models with spatially constant sign-changing curvature
DO  - 10.4171/PM/2099
ER  -