The bounded-cycle-space fat minor conjecture
The bounded-cycle-space fat minor conjecture
Let be a graph, and let be a graph whose cycle space is generated by cycles of length at most . A graph is -fat-minor-free with respect to when it does not contain as a -fat minor.
Bounded-cycle-space fat minor conjecture. For every graph there exists a function such that, for every graph whose cycle space is generated by cycles of length at most , if does not contain as a -fat minor for some , then is -quasi-isometric to a graph with no minor.
This is presented as a still-open special case of the refuted fat minor conjecture. The bounded-cycle-space hypothesis is significant because the known counterexamples do not have cycle spaces generated by cycles of bounded length.
Progress summary
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Sources & referencesView supporting material
Primary source
Sandra Albrechtsen, “A coarse Menger theorem for hyperbolic graphs, finitely presented groups, and more”, arXiv:2606.17605 (2026).
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