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  2. Category:Theorems in graph theory - Wikipedia

    en.wikipedia.org/wiki/Category:Theorems_in_graph...

    Download as PDF; Printable version; ... Pages in category "Theorems in graph theory" ... Kirchhoff's theorem; Kőnig's theorem (graph theory) Kotzig's theorem;

  3. 2-factor theorem - Wikipedia

    en.wikipedia.org/wiki/2-factor_theorem

    The theorem was discovered by Julius Petersen, a Danish mathematician. It is one of the first results ever discovered in the field of graph theory. The theorem appears first in the 1891 article "Die Theorie der regulären graphs". To prove the theorem, Petersen's fundamental idea was to 'colour' the edges of a trail or a path alternatively red ...

  4. Graph theory - Wikipedia

    en.wikipedia.org/wiki/Graph_theory

    In set theory and graph theory, denotes the set of n-tuples of elements of , that is, ordered sequences of elements that are not necessarily distinct. In the edge ( x , y ) {\displaystyle (x,y)} directed from x {\displaystyle x} to y {\displaystyle y} , the vertices x {\displaystyle x} and y {\displaystyle y} are called the endpoints of the ...

  5. Turán's method - Wikipedia

    en.wikipedia.org/wiki/Turán's_method

    2 Turán's second theorem. 3 See also. ... Download as PDF; Printable version; ... Turán's theorem in graph theory; References

  6. Turán's theorem - Wikipedia

    en.wikipedia.org/wiki/Turán's_theorem

    In graph theory, Turán's theorem bounds the number of edges that can be included in an undirected graph that does not have a complete subgraph of a given size. It is one of the central results of extremal graph theory, an area studying the largest or smallest graphs with given properties, and is a special case of the forbidden subgraph problem on the maximum number of edges in a graph that ...

  7. List of theorems - Wikipedia

    en.wikipedia.org/wiki/List_of_theorems

    De Bruijn–Erdős theorem (graph theory) De Finetti's theorem (probability) De Franchis theorem (Riemann surfaces) De Gua's theorem ; De Moivre's theorem (complex analysis) De Rham's theorem (differential topology) Deduction theorem ; Denjoy theorem (dynamical systems) Denjoy–Carleman theorem (functional analysis)

  8. Graph Theory, 1736–1936 - Wikipedia

    en.wikipedia.org/wiki/Graph_Theory,_1736–1936

    Graph Theory, 1736–1936 is a book in the history of mathematics on graph theory. It focuses on the foundational documents of the field, beginning with the 1736 paper of Leonhard Euler on the Seven Bridges of Königsberg and ending with the first textbook on the subject, published in 1936 by Dénes Kőnig .

  9. Erdős–Pósa theorem - Wikipedia

    en.wikipedia.org/wiki/Erdős–Pósa_theorem

    In the mathematical discipline of graph theory, the Erdős–Pósa theorem, named after Paul Erdős and Lajos Pósa, relates two parameters of a graph: The size of the largest collection of vertex-disjoint cycles contained in the graph; The size of the smallest feedback vertex set in the graph: a set that contains one vertex from every cycle.