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Bibliographic Details
Main Authors: Yu, Shuhui, Ji, Lijun
Format: Preprint
Published: 2024
Subjects:
Online Access:https://arxiv.org/abs/2412.08659
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Table of Contents:
  • Let $\mathcal{F}$ be a family of $k$-dimensional subspaces of an $n$-dimensional vector space. Write $\mathcal{D}_{\mathcal{F}}(H;t)=\{F\in \mathcal{F}\colon \dim(F\cap H)\leq t \}$ for a subspace $H$. The family $\mathcal{F}$ is called $s$-almost $t$-intersecting if $|\mathcal{D}_{\mathcal{F}}(F;t)|\leq s$ for each $F\in \mathcal{F}$. In this note, we prove that $s$-almost $t$-intersecting families with maximum size are $t$-intersecting.