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Generalisation of the Danilov-Karzanov-Koshevoy Construction for Peak-Pit Condorcet Domains

Danilov, Karzanov and Koshevoy (2012) geometrically introduced an interesting operation of composition on tiling Condorcet domains and using it they disproved a long-standing problem of Fishburn about the maximal size of connected Condorcet domains. We give an algebraic definition of this operation and investigate its properties. We give a precise formula for the cardinality of composition of two Condorcet domains and improve the Danilov, Karzanov and Koshevoy result showing that Fishburn's alternating scheme does not always define a largest peak-pit Condorcet domain.

preprint2020arXivOpen access
Arkadii Slinko
math.CO
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Arkadii Slinko

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