The paper explores the impact of costly alliance formation on the viability of alliances in coalitional Blotto games. It makes the following key contributions:
Theorem 1 provides necessary and sufficient conditions for the existence of mutually beneficial costly budget transfers. Even when the transfer cost is high, such that the recipient only receives a fraction of the transferred budget, there still exists a nontrivial subset of game instances where budget transfers are viable.
Theorem 2 shows that in almost all game instances, mutually beneficial alliances can be formed through costly joint transfers, where players simultaneously transfer both budget and contest valuations. This highlights that the costs of alliance formation almost never outweigh the potential benefits.
The analysis considers four distinct cases based on the adversary's optimal allocation strategy. For each case, the authors characterize the conditions under which mutually beneficial transfers exist, accounting for the costs associated with the transfers. The results demonstrate that enhancing the strategy space by allowing joint transfers can create collaboration opportunities even when simple budget transfers are not viable due to high costs.
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by Vade Shah, K... о arxiv.org 09-12-2024
https://arxiv.org/pdf/2409.06899.pdfГлибші Запити