Concepedia
Journal of Algebra · 1988 · 1.2K citations · 1 references
Commutative AlgebraCommutative RingsPigmentRing Theory
1
A Colour Problem for Infinite Graphs and a Problem in the Theory of Relations
N.G. de Bruijn, Péter L. Erdős · Indagationes Mathematicae (Proceedings) · 1951 · 271 citations · Full text
Geometric Graph Theory, Graph Theory, Algebraic Graph Theory +6