On the Turán number of the hypercube

O Janzer, B Sudakov - Forum of Mathematics, Sigma, 2024 - cambridge.org
On the Turán number of the hypercube Page 1 Forum of Mathematics, Sigma (2024), Vol. 12:e38
1–19 doi:10.1017/fms.2024.27 RESEARCH ARTICLE On the Turán number of the hypercube …

Rainbow cycles in properly edge-colored graphs

J Kim, J Lee, H Liu, T Tran - Combinatorica, 2024 - Springer
We prove that every properly edge-colored n-vertex graph with average degree at least\(32
(\log 5n)^ 2\) contains a rainbow cycle, improving upon the\((\log n)^{2+ o (1)}\) bound due to …

Sublinear expanders and their applications

S Letzter - Surveys in Combinatorics, to appear, 2024 - arxiv.org
In this survey we aim to give a comprehensive overview of results using sublinear
expanders. The term sublinear expanders refers to a variety of definitions of expanders …

Edge-disjoint cycles with the same vertex set

D Chakraborti, O Janzer, A Methuku… - arXiv preprint arXiv …, 2024 - arxiv.org
In 1975, Erd\H {o} s asked for the maximum number of edges that an $ n $-vertex graph can
have if it does not contain two edge-disjoint cycles on the same vertex set. It is known that …

Near-Tight Bounds for 3-Query Locally Correctable Binary Linear Codes via Rainbow Cycles

O Alrabiah, V Guruswami - arXiv preprint arXiv:2404.05864, 2024 - arxiv.org
We prove that a binary linear code of block length $ n $ that is locally correctable with $3 $
queries against a fraction $\delta> 0$ of adversarial errors must have dimension at most …

Small Even Covers, Locally Decodable Codes and Restricted Subgraphs of Edge-Colored Kikuchi Graphs

JT Hsieh, PK Kothari, S Mohanty, DM Correia… - arXiv preprint arXiv …, 2024 - arxiv.org
Given a $ k $-uniform hypergraph $ H $ on $ n $ vertices, an even cover in $ H $ is a
collection of hyperedges that touch each vertex an even number of times. Even covers are a …

Improved Lower Bounds for all Odd-Query Locally Decodable Codes

A Basu, JT Hsieh, PK Kothari, AD Lin - arXiv preprint arXiv:2411.14361, 2024 - arxiv.org
We prove that for every odd $ q\geq 3$, any $ q $-query binary, possibly non-linear locally
decodable code ($ q $-LDC) $ E:\{\pm1\}^ k\rightarrow\{\pm1\}^ n $ must satisfy $ k\leq\tilde …

[PDF][PDF] New Spectral Techniques in Algorithms, Combinatorics, and Coding Theory: The Kikuchi Matrix Method

P Manohar - 2019 - reports-archive.adm.cs.cmu.edu
In this thesis, we present a new method to solve algorithmic and combinatorial problems by
(1) reducing them to bounding the maximum, over 𝑥∈{− 1, 1} 𝑛, of homogeneous degree-𝑞 …