A generalization of Ramsey theory to mathematical objects in which one would not normally expect structure to be found. For example,
there exists a graph with very few triangles (more precisely, a graph which can always
be constructed so that there is no "cycle" of triangles which are all distinct
and
meets
in at least one vertex) and such that however it is colored with
colors, one of the colors contains a triangle. The usual proof
of Ramsey's theorem gives no insight on how to
prove such a result.
Structural Ramsey Theory
See also
Extremal Graph Theory, Ramsey's Theorem, Ramsey TheoryExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Structural Ramsey Theory." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/StructuralRamseyTheory.html