### Abstracts

July 16, 2003

**Juris Steprans**, York University

*Komjath's problem in 3-dimensional Euclidean space*.

It will be shown to be consistent with set theory that every set of
reals of size $\aleph_1$ is Lebesgue null, yet there are $\aleph_1$
planes in 3-space whose union is not null. The first talk will concentrate
on set theoretic matters, while the second will deal with the necessary
geometric measure theory.

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