TY  - GEN 
AU  - Morales Álvarez, Pablo
AU  - Sánchez Caja, Miguel
PY  - 2015
UR  - https://hdl.handle.net/10481/99210
AB  - Globally hyperbolic spacetimes admitting infinitely many causal (and timelike) homotopy classes of curves joining two prescribed points, are exhibited and discussed.
LA  - eng
TI  - A note on the causal homotopy classes of a globally hyperbolic spacetime
DO  - 10.1088/0264-9381/32/19/197001
ER  -