On a common understanding of #persistence, something persists if, somehow or other, it exists at various times. The three rival modes of persistence are #endurance, #perdurance, and #exdurance.

#PhilosophyOfTime
#YuriBalashov

Persistence and Spacetime by Yuri Balashov (PDF)
Author: Yuri Balashov
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If the poker endures it is (exactly) located at every t-slice of its path but not at any other region, including the path in its entirety.

#YuriBalashov
#PhilosophyOfTime
#Endurance

#Eternalism holds that all moments of time and their contents enjoy the same ontological status. Past and future moments, events, and objects are just as real as the present ones. Eternalism contrasts with #presentism, the view that only the present entities are real.

#YuriBalashov

Exdurance is needlessly handicapped right from the start as the exduring objects (not existing at more than one moment) apparently fail to be multilocated in spacetime, which seems to disqualify #exdurance from being a legitimate mode of persistence.

#YuriBalashov
#PhilosophyOfTime

If the poker #exdures it is exactly located at some t-slice of its path in its entirety: no parts of the poker are missing from it. In other words, an exduring object is wholly present at exactly one moment of time.

#Exdurance
#PhilosophyOfTime
#YuriBalashov

If the poker #perdures it is exactly located at its entire path but not at any other region, including various t-slices of its path. What is located at such slices are distinct temporal parts (‘t-parts’) of the poker.

#YuriBalashov
#PhilosophyOfTime
#Perdurance

If o is located at a proper subregion R of a larger region R′, it does not follow that o is located at R′. And conversely, if o is located at R, it does not follow that o is located at any proper subregion of R.

#YuriBalashov
#PhilosophyOfTime