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Showing 1 to 6 of 6 for “"Structural graph theory"”.
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Some Problems in Structural Graph Theory
For a complete bipartite graph Ks,t, the total number of edges st may not be a triangular number; that is, there may exist 0 < ℓ ≤ n such that e(G) = 1 + 2 + 3 + ··· + n + ℓ. A new question is, can we still decompose the graph Ks,t into distinct paths of lengths 1, …
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Five Topics in Extremal and Structural Graph Theory
The Friendship Theorem states that if G is a graph in which every two vertices have exactly one common neighbor, then G has a dominating vertex. Sos defined an analogous friendship property for 3-uniform hypergraphs, and constructed a family satisfying it. We present additional 3-uniform …
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List coloring in general graphs
… new approaches to the problem of list-coloring graphs. This is a problem that has its roots in classical graph theory, but has developed an entire theory of its own, that uses tools from structural graph theory, probabilistic approaches, as well as heuristic and algorithmic approaches. This …
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Extremal and Structural Problems of Graphs
… are interested in studying several parameters of graphs and understanding their extreme values. We begin in Chapter~$2$ with a question on edge colouring. When can a partial proper edge colouring of a graph of maximum degree $\Delta$ be extended to a proper colouring of the entire graph using an …
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Topics in metric geometry, combinatorial geometry, extremal combinatorics and additive combinatorics
… conjecture. The proof is in the spirit of structural graph theory. The key point is the fact that the diameters are bounded. This strengthens a result of Gyárfás, who proved the same but with no diameter bounds (i.e. just with the sets being connected). Recall that a set of points in …
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Viewing extremal and structural problems through a probabilistic lens
… probability to solve problems from extremal and structural combinatorics. The main problem in Chapter 2 is determining the typical structure of $t$-intersecting families in various settings and enumerating such systems. The analogous sparse random versions of our extremal results are also …