Geoffrey Exoo and Dan Ismailescu, or 2 Men for 2 Forbidden Distances

Alexander Soifer
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Alexander Soifer: University of Colorado at Colorado Springs, College of Letters, Arts, and Sciences

Chapter Chapter 58 in The New Mathematical Coloring Book, 2024, pp 713-722 from Springer

Abstract: Abstract We have a team of a Geombinatorics Editor Geoffrey Exoo and Dan Ismailescu. You may recall Chap. 16 of this book dedicated to their construction of unit-distance graphs of successive orders 21, 19, and 17 of girth 4 and proving that 17 is best possible, thus settling my open problem 15.4 posed in the first edition of this book [Soi44]. You also saw Geoffrey’s lower bounds for Ramsey Numbers, the Schur number 5, and many more results.

Date: 2024
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DOI: 10.1007/978-1-0716-3597-1_58

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