most citedA note on the causal homotopy classes of a globally hyperbolic spacetime

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math.DG2015★ 4 cited

A note on the causal homotopy classes of a globally hyperbolic spacetime

Pablo Morales Álvarez, Miguel Sánchez

Globally hyperbolic spacetimes admitting infinitely many causal (and timelike) homotopy classes of curves joining two prescribed points, are exhibited and discussed.