## Zentralblatt MATH

Publications of (and about) Paul Erdös

Zbl.No:  513.05038
Autor:  Erdös, Paul
Title:  Ramsey numbers for brooms. (In English)
Source:  Combinatorics, graph theory and computing, Proc. 13th Southeast. Conf., Boca Raton 1982, Congr. Numerantium 35, 283-293 (1982).
Review:  [This article was published in the book announced in Zbl 504.00004.]
From the author's abstract: A broom Bk,\ell is a tree obtained by identifying an endvertex of a path on \ell vertices with the central vertex of star on k edges. The Ramsey number r(Bk,\ell) is determined precisely for \ell \geq 2k and relatively sharp bounds are found for 1 \leq \ell < 2k. For appropriate choices of k an \ell show r(Bk,\ell = {4(k+\ell)/3-1} which is the smallest possible value of the Ramsey number of any tree on k+\ell vertices.
Reviewer:  E.Palmer
Classif.:  * 05C55 Generalized Ramsey theory
05C05 Trees
Keywords:  Ramsey numbers of trees
Citations:  Zbl.504.00004

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