Abstract
Physicists interested in chronology-violating spacetimes have considered various strategies for avoiding the time travel paradoxes which can arise in those spacetimes. One such strategy is the adoption of a branching (non-Hausdorff) topology for spacetime. Branching spacetime models also arise in other physical contexts, such as the many-worlds interpretation of quantum mechanics. A known objection to the idea of branching spacetime stems from the fact that an observer in such a spacetime may have multiple futures or pasts. In this paper I describe a new non-Hausdorff spacetime model in which each observer has a unique history. This model differs topologically from previous non-Hausdorff spacetime models in that is not aT1-space.
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