Independent sets in the hypercube revisited
We revisit Sapozhenko's classic proof on the asymptotics of the number of independent sets
in the discrete hypercube {0, 1} d and Galvin's follow‐up work on weighted independent …
in the discrete hypercube {0, 1} d and Galvin's follow‐up work on weighted independent …
Approximately counting independent sets in bipartite graphs via graph containers
By implementing algorithmic versions of Sapozhenko's graph container methods, we give
new algorithms for approximating the number of independent sets in bipartite graphs. Our …
new algorithms for approximating the number of independent sets in bipartite graphs. Our …
Lipschitz functions on weak expanders
RA Krueger, L Li, J Park - arxiv preprint arxiv:2408.14702, 2024 - arxiv.org
Given a connected finite graph $ G $, an integer-valued function $ f $ on $ V (G) $ is called $
M $-Lipschitz if the value of $ f $ changes by at most $ M $ along the edges of $ G $. In 2013 …
M $-Lipschitz if the value of $ f $ changes by at most $ M $ along the edges of $ G $. In 2013 …
On the zeroes of hypergraph independence polynomials
We study the locations of complex zeroes of independence polynomials of bounded-degree
hypergraphs. For graphs, this is a long-studied subject with applications to statistical …
hypergraphs. For graphs, this is a long-studied subject with applications to statistical …
Independent sets in the middle two layers of Boolean lattice
For an odd integer n= 2 d− 1, let B (n, d) be the subgraph of the hypercube Q n induced by
the two largest layers. In this paper, we describe the typical structure of independent sets in …
the two largest layers. In this paper, we describe the typical structure of independent sets in …
On Dedekind's problem, a sparse version of Sperner's theorem, and antichains of a given size in the Boolean lattice
Dedekind's problem, dating back to 1897, asks for the total number $\psi (n) $ of antichains
contained in the Boolean lattice $ B_n $ on $ n $ elements. We study Dedekind's problem …
contained in the Boolean lattice $ B_n $ on $ n $ elements. We study Dedekind's problem …
On the evolution of structure in triangle-free graphs
We study the typical structure and the number of triangle-free graphs with $ n $ vertices and
$ m $ edges where $ m $ is large enough so that a typical triangle-free graph has a cut …
$ m $ edges where $ m $ is large enough so that a typical triangle-free graph has a cut …
The number of colorings of the middle layers of the hamming cube
L Li, G McKinley, J Park - Combinatorica, 2025 - Springer
For an odd integer\(n= 2d-1\), let\({\mathcal {B}} _d\) be the subgraph of the
hypercube\(Q_n\) induced by the two largest layers. In this paper, we describe the typical …
hypercube\(Q_n\) induced by the two largest layers. In this paper, we describe the typical …
Long-range order in discrete spin systems
We establish long-range order for discrete nearest-neighbor spin systems on $\mathbb {Z}^
d $ satisfying a certain symmetry assumption, when the dimension $ d $ is higher than an …
d $ satisfying a certain symmetry assumption, when the dimension $ d $ is higher than an …
The number of maximal independent sets in the Hamming cube
J Kahn, J Park - arxiv preprint arxiv:1909.04283, 2019 - arxiv.org
Let $ Q_n $ be the $ n $-dimensional Hamming cube and $ N= 2^ n $. We prove that the
number of maximal independent sets in $ Q_n $ is asymptotically\[2n2^{N/4},\] as was …
number of maximal independent sets in $ Q_n $ is asymptotically\[2n2^{N/4},\] as was …