18 problems
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Collins–Trenk conjecture on distinguishing chromatic number
Collins–Trenk conjecture. If is different from and , then
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The conjecture that almost all finite graphs are 2-distinguishable
Almost-all finite graphs conjecture. Almost all finite graphs are 2-distinguishable.
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Optimal union vertex-distinguishing edge colorings of forests
Let be a forest on vertices, and let denote its union vertex-distinguishing edge chromatic number, where edge colors are sets and the union of the colors…
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The distinguishing-index conjecture for connected regular graphs of infinite degree
Distinguishing-index conjecture. One has
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Conjectured edge-distinguishing chromatic bound for infinite graphs
Conjectured edge-distinguishing bound. Then
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Conjectured infinite-motion bound for distinguishing chromatic number
Conjectured infinite-motion bound. Then
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Conjectured bound for distinguishing chromatic number of infinite graphs
Conjectured distinguishing-chromatic bound. Then
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Identical lists maximize the probability of a non-distinguishing coloring
Let be a graph, and let be a collection of equal-sized lists, each of size , indexed by the vertices of . Choose a color from each vert…
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Two-sided comparison of distinguishing edge and total chromatic numbers
Let be a connected simple graph. Let and denote the strong and adjacent-strong vertex-distinguishing proper edge chromatic numbers, respect…
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The finite replacement-number conjecture for Euclidean space
Let be the Euclidean isometry group acting on . Define the replacement number to be the smallest such that every distingui…
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The finite distinguishing extension-number conjecture for the Euclidean plane
Let be the Euclidean isometry group acting on , and let denote the distinguishing extension number. Finite extension-nu…
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The extension-number conjectures for the plane, sphere, and Euclidean 3-space
Let be the Euclidean isometry group of , let act on , and let be the Euclidean isometry group of . Their distinguishing extensio…
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The conjecture that the distinguishing extension number of Euclidean 3-space is finite
Let denote the Euclidean isometry group acting on , and let be its distinguishing extension number. Finite extension-nu…
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The 3-dimensional Euclidean extension distinguishing number conjecture
3-dimensional Euclidean extension conjecture.
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The 2-sphere extension distinguishing number conjecture
2-sphere extension conjecture.
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The plane extension distinguishing number conjecture
Plane extension conjecture.
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The circle extension distinguishing number conjecture
Circle extension conjecture.
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The cycle extension distinguishing number conjecture
Cycle extension conjecture.