Existence of globally hyperbolic refocusing spacetimes that are not strongly refocusing is shown, along with the implication that Legendrian refocusing yields strongly refocusing metrics.
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Refocusing spacetimes need not be strongly refocusing
Existence of globally hyperbolic refocusing spacetimes that are not strongly refocusing is shown, along with the implication that Legendrian refocusing yields strongly refocusing metrics.