V. Rodrigues

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math.LO2026

On the possible values of the Rearrangement Number

Vinicius de Oliveira Rodrigues

The rearrangement number $rr$ is the least cardinality of a collection of permutations of $I ¨ $ such that every conditionally convergent real series is disrupted by some…

math.LO2026

Almost Disjointness Principles and $Q$ -Space Cardinals

Vinicius de Oliveira Rodrigues

Banakh and Bazylevych introduced separation-axiom variants $q_{i}$ , for $i = 1, 2, 2 \frac{1}{2}$ , of the cardinal $q$ , together with a cardinal $adp$ lying…

On the possible values of the Rearrangement Number

Almost Disjointness Principles and Q-Space Cardinals

Almost Disjointness Principles and $Q$ -Space Cardinals