"Disjunctive Rado numbers for the set of equations ax(,1) + x(,2) = x(," by Liz Lane-Harvard

Document Type

Thesis - University Access Only

Award Date

2009

Degree Name

Master of Science (MS)

Department / School

Mathematics and Statistics

Abstract

For all integers a and b that satisfy 2 ≤ a ≤ b, let t = rd(S(a), S(b)) be the least integer for S( a) : ax1 + x2 = x3; S(b) : bx1 + x2 = x 3 such that for every coloring Δ : {1, 2, ...t} → {0, 1} there exist integers x1, x 2, and x3 ∈ {1, 2, ...t} such that either ax1 + x 2 = x3 or bx1 + x2 = x3 and Δ( x1) = Δ(x2) = Δ( x3). This t represents the disjunctive Rado number for the set of equations S(a) and S(b). The following theorem is the main result of the paper. Theorem. Let a, b, and r be integers such that 2 ≤ a ≤ b, r is the remainder when (a + 1)2 is divided by b, and 0 ≤ r < b. The disjunctive Rado number for the equations S(a) : ax1 + x2 = x 3 and S(b) : bx1 + x2 = x3 is[special characters omitted]

Library of Congress Subject Headings

Ramsey theory
Combinatorial analysis
Rado numbers

Format

application/pdf

Number of Pages

37

Publisher

South Dakota State University

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