Wheel and broken-wheel cohomology conjecture over A5\mathcal A_5

For n>4n>4, let WnW_n be the wheel graph, let WnoutW_n^{out} be obtained by deleting an edge from its polygonal part, and let WninW_n^{in} be obtained by deleting a spike edge. Wheel and broken-wheel conjecture.

HA51,4n3(Wnout)=Z5n1Zn2H^{1,4n-3}_{{\mathcal A}_5}(W_n^{out})=\mathbb{Z}_5^{n-1}\oplus\mathbb{Z}^{n-2} HA51,4n3(Wn)=Z5nZnH^{1,4n-3}_{{\mathcal A}_5}(W_n)=\mathbb{Z}_5^{n}\oplus\mathbb{Z}^{n} HA51,4n3(Wnin)=Z5n2Zn2.H^{1,4n-3}_{{\mathcal A}_5}(W_n^{in})=\mathbb{Z}_5^{n-2}\oplus\mathbb{Z}^{n-2}.

These formulas are computational conjectures for n>4n>4; the source does not report a resolution.

Sources & referencesView supporting material

Primary source

Milena D. Pabiniak, Jozef H. Przytycki and Radmila Sazdanovic, “On the first group of the chromatic cohomology of graphs”, arXiv:math/0607326 (2006).

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