Sittinon Jirattikansakul

activity

20232026

collaborators

2 papers

math.NT2026

Congruences via Partitions with Exactly Two Part Sizes

Sittinon Jirattikansakul, Teeradej Kittipassorn, Kraiwich Kongsiri +2

We prove the congruence $\sum_{1 \leq k < N} σ_{0} (N - k^{2}) \equiv 0 (mod 4)$ , where $σ_{0} (m)$ denotes the number of positive divisors of $m$ , for $N = A n + B$ with $(A,B) \in…

math.LO2024

A model for global compactness

Sittinon Jirattikansakul, Inbar Oren, Assaf Rinot

In a classical paper by Ben-David and Magidor, a model of set theory was exhibited in which $ℵ_{ω + 1}$ carries a uniform ultrafilter that is $θ$ -indecomposable for every uncoun…