Strictly strategy-proof auctions

Matteo Escudé; Ludvig Sinander

doi:10.1016/j.mathsocsci.2020.07.002

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arXiv · 1807.11864

Strictly strategy-proof auctions

Matteo Escudé·Ludvig Sinander

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Abstract

A strictly strategy-proof mechanism is one that asks agents to use strictly dominant strategies. In the canonical one-dimensional mechanism design setting with private values, we show that strict strategy-proofness is equivalent to strict monotonicity plus the envelope formula, echoing a well-known characterisation of (weak) strategy-proofness. A consequence is that strategy-proofness can be made strict by an arbitrarily small modification, so that strictness is 'essentially for free'.

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Matteo Escudé, Ludvig Sinander. 2018-07-31. Strictly strategy-proof auctions. https://doi.org/10.1016/j.mathsocsci.2020.07.002

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