Inspired by Bartoszy\'nski's work on small sets, we introduce a new ideal defined by interval partitions on natural numbers and summable sequences of positive reals. Similarly, we present another ideal that relies on Bartoszy\'nski's and Shelah's characterization of F_σ measure zero sets. We demonstrate that they are σ-ideals and provide characterizations of the families of all small sets and the ideal induced by F_σ measure zero sets. We also study the cardinal characteristics associated with the introduced ideals. We discuss their connection to Cicho\'n's diagram and present related consistency results.
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Cardona et al. (2024) studied this question.
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