Topological and Measure-Theoretic Properties of Partition-Dominating Sets (Preprint)
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This paper extends partition-dominating sets—subsets whose elements lie in maximum-cardinality parts across partition families—to topological and measure-theoretic contexts. For countable partition families on Polish spaces with nowhere-dense rigging, we construct comeager dominating sets; for probability measure spaces with null rigging, we obtain conull dominating sets. For uncountable products indexed by κ, we introduce λ-scaled rigging (λ ≤ κ) ensuring complements of size at least λ⁺. Under measurable cardinals, the generated filter embeds in a measurable ultrafilter, yielding homogeneity properties. The results unify Baire category, measure, and large-cardinal frameworks, and all proofs are formalized in ZFC unless stated otherwise.",
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Half_Dense_Paper_2r__TOPOLOGICAL_AND_MEASURE_THEORETIC_PROPERTIES_OF_PARTITION_DOMINATING_SETS (1).pdf
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- Preprint: 10.5281/zenodo.17509560 (DOI)
- Preprint: 10.5281/zenodo.17509711 (DOI)
References
- Betzer, D. (2025). (Expanded) Partition-Dominating Sets: Rigged Partitions, Filters, Forcing, and Sphere Paradoxes (Preprint). Zenodo. https://doi.org/10.5281/zenodo.17509451
- Betzer, D. (2025). Bounded Rigging and λ-Half-Density in Indexed Partitions of Sets (Preprint). Zenodo. https://doi.org/10.5281/zenodo.17509239
- J. C. Oxtoby, Measure and Category, Springer, 1980, doi:10.1007/978-1-4684-9339-9.",
- A. Kanamori, The Higher Infinite: Large Cardinals in Set Theory from Their Beginnings, 2nd ed., Springer, 2003."