Intersections of iterated shadows

التفاصيل البيبلوغرافية
العنوان: Intersections of iterated shadows
المؤلفون: Chau, Hou Tin, Ellis, David, Tiba, Marius
سنة النشر: 2024
المجموعة: Mathematics
مصطلحات موضوعية: Mathematics - Combinatorics, Mathematics - Classical Analysis and ODEs, 05D05
الوصف: We show that if $\mathcal{A} \subset {[n] \choose n/2}$ with measure bounded away from zero and from one, then the $\Omega(\sqrt{n})$-iterated upper shadows of $\mathcal{A}$ and $\mathcal{A}^c$ intersect in a set of positive measure. This confirms (in a strong form) a conjecture of Friedgut. It can be seen as a stability result for the Kruskal--Katona theorem.
Comment: Minor corrections. 8 pages
نوع الوثيقة: Working Paper
URL الوصول: http://arxiv.org/abs/2409.05487
رقم الانضمام: edsarx.2409.05487
قاعدة البيانات: arXiv