Equality of the honest-effort and attainable tournament regions

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Let An\mathcal{A}_n denote the set of score vectors attainable in tournaments on nn players, and let An∗\mathcal{A}^{*}_n denote the region generated by the tournament configurations described above. The examples satisfy A1∗=A1\mathcal{A}^{*}_1=\mathcal{A}_1, A2∗=A2\mathcal{A}^{*}_2=\mathcal{A}_2, and A3∗=A3\mathcal{A}^{*}_3=\mathcal{A}_3. Equality conjecture.

An∗=An,\mathcal{A}^{*}_n=\mathcal{A}_n,

for every n∈Nn\in\mathbb{N}. This would assert that the configurations captured by An∗\mathcal{A}^{*}_n produce exactly all attainable score vectors, despite the map used to construct the region ceasing to be injective for n≥3n\geq 3.

References

Primary source

Peter Hegarty, Anders Martinsson and Edvin Wedin, “The "No Justice in the Universe" phenomenon: why honesty of effort may not be rewarded in tournaments”, arXiv:1803.00823 (2018).

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