•  35
    Are backwards-infinite causal sequences possible? (review)
    Logic and Logical Philosophy 28 (2). 2019.
  •  1014
    Surreal Time and Ultratasks
    with Charles J. Geyer
    Review of Symbolic Logic 9 (4): 836-847. 2016.
    This paper suggests that time could have a much richer mathematical structure than that of the real numbers. Clark & Read (1984) argue that a hypertask (uncountably many tasks done in a finite length of time) cannot be performed. Assuming that time takes values in the real numbers, we give a trivial proof of this. If we instead take the surreal numbers as a model of time, then not only are hypertasks possible but so is an ultratask (a sequence which includes one task done for each ordinal number…Read more