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7 Pith papers cite this work. Polarity classification is still indexing.

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2026 7

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The mapping index through the lens of the cross-index

math.CO · 2026-05-13 · unverdicted · novelty 6.0

Cross-index of free G-posets satisfies a sharp union bound xind(P) ≤ xind(A) + xind(B) + 1 for Z2 but only xind(P) ≤ xind(A) + 2(xind(B)+1) for other G, with arbitrarily large gap to the topological index.

The Non-Orientable Topology of Condorcet's Paradox

math.AT · 2026-01-12 · conditional · novelty 6.0

Contradictory preference cycles in Condorcet's paradox are non-orientable surfaces: the Klein bottle (unrealised) or the real projective plane (realised), yielding an orientability reformulation of Arrow's theorem.

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