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Geometric realisations of trees are Cat(0)

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#graph-theory #trees #geometric-group-theory
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Coloring a $3\times n$ board using $3$ colors

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#combinatorics #graph-theory #coloring
26
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Is showing all trees have $\rho$-valuation not enough to prove Ringel's conjecture about trees decomposing odd complete graph?

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#graph-theory #trees #conjectures
184
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Cohomology with compact supports of infinite trivalent tree

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#proof-verification #graph-theory #algebraic-topology #homology-cohomology
38
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Automorphisms of simple tree with coloring set

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#discrete-mathematics #proof-verification #graph-theory #coloring
20
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Checking if a flow is possible on a cyclic undirected graph using greedy algorithm after reduction to simpler graph

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#graph-theory
153
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Invariants restricting possible similarity matrices to only permutations for graph isomorphism problem?

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#linear-algebra #graph-theory #permutations #tensor-products #invariant-theory
28
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graph optimization problems using 2 graphs

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#graph-theory #reference-request
155
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If $G$ and $H$ on 3 or more vertices are hypomorphic, don't they have to be isomorphic due to their shared induced subgraphs?

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#proof-verification #graph-theory #graph-isomorphism
122
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Find number of trees with $\deg(v) = 1$ or $\deg(v) = 3$

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#discrete-mathematics #graph-theory #trees
689
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Can an euler circuit contain euler path?

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#discrete-mathematics #graph-theory
478
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What is the circuit rank of a complete graph?

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#graph-theory
235
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Bipartite Graph n-1 matchings

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#discrete-mathematics #graph-theory #bipartite-graphs
437
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Getting everyone to meet everyone else

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#combinatorics #discrete-mathematics #graph-theory #combinatorial-designs
79
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Determine whether M = ([3],B), with B = ([3] C 2), is a graphic matroid.

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#discrete-mathematics #graph-theory #matroids

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