Title
Hat Guessing on Books and Windmills
Abstract
The hat-guessing number is a graph invariant defined by Butler, Hajiaghayi, Kleinberg, and Leighton. We determine the hat-guessing number exactly for book graphs with sufficiently many pages, improving previously known lower bounds of He and Li and exactly matching an upper bound of Gadouleau. We prove that the hat-guessing number of K-3(,3) is 3, making this the first complete bipartite graph K-n,K-n for which the hat-guessing number is known to be smaller than the upper bound of n +1 of Gadouleau and Georgiou. Finally, we determine the hat-guessing number of windmill graphs for most choices of parameters.
Year
DOI
Venue
2022
10.37236/10098
ELECTRONIC JOURNAL OF COMBINATORICS
DocType
Volume
Issue
Journal
29
1
ISSN
Citations 
PageRank 
1077-8926
0
0.34
References 
Authors
0
3
Name
Order
Citations
PageRank
Xiaoyu He100.34
Yuzu Ido200.34
Benjamin Przybocki300.68