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Author

A. Kupavskii

3 papers indexed here

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Preprint Oct 2026

Families that intersect in an arithmetic progression

For $n\in\mathbb N$, let $\mu_n$ be the uniform measure on $2^{[n]}$. A family $\mathcal F \subseteq2^{[n]}$ is called $k$-AP-intersecting if $F_1\cap F_2$ contains a nonconstant $k$-term arithmetic progression for every $F_1, F_2\in\mathcal F$. Writing $m_k$ for the supremum of $\mu_n(\mathcal F)$ over all $n$ and all...

A. Kupavskii, F. Noskov, Georgy Sokolov et al. · 0 citations
Preprint Oct 2026

Between the Semi-Random Process and G(n,p)

We study a random graph process that connects the Erd\H{o}s--R\'enyi random graph with the semi-random process. In each round, a uniformly random vertex is revealed together with a uniformly random candidate set of $s$ possible partners, and Builder chooses one of them. We study how this limited adaptivity $s$ changes...

Margarita Akhmejanova, A. Kupavskii · 0 citations
Preprint Oct 2026

SP-Allreduce: Symmetric Tree Schedules for Tori and Beyond

Allreduce is a fundamental communication primitive in large-scale distributed training, and torus interconnects remain widely deployed in high-performance systems. We introduce SP-allreduce, a new allreduce algorithm for $d$-dimensional tori that exploits the symmetry of the topology and routes only along shortest path...

M. Cherniavskii, A. Kupavskii, Г. Г. Миронов et al. · 0 citations

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