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Results tagged with matroid-theory
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user 23850
Questions related to the field of Combinatorics called Matroid Theory. Relevant topics include matroids in Combinatorial Optimization, Lattice Theory, Algebraic Geometry, Polyhedral Theory, Rigidity, and Algorithms. For questions about Oriented Matroids, the oriented-matroids tag may be used.
2
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Hamiltonian Matroids
Similar to graphs, a Matroid $M$ is said to be Hamiltonian if there is a base $B$ of $M$ and $e \in M-B$ such that $B + e$ is a cycle of $M$. Is there any literature on this?
EDIT: Actually my inter …
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3
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1
answer
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Fundamental Cycles of a graphs
For a $2$-edge-connected simple graph $G$ and a tree $T$ of $G$, let $C_e$ be the unique cycle in $T + e$, $e \in E(G) - E(T)$. Define the set $\mathcal{C}(T) = \{C_e | e \in E(G) - E(T)\}$.
Now gi …
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5
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2
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Does this graph have a name?
Let $G$ be a connected graph on $n$ vertices and $\mathcal{T}$ be the set of all spanning trees of $G$.
Consider the graph whose vertices are the elements of $\mathcal{T}$
and
$T, T' \in \mathca …
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1
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answer
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Do the cycles containing a fixed edge generate the cycle space of a graph?
Let $G$ be a $2$-connected graph and for $e \in E(G)$ denote by $\mathcal{C_e}$ the set of all cycles of $G$ containing the edge $e$.
For what set of edges does $\mathcal{C_e}$ contain a basis of the …
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