Browsing Economics by OzU Authors "Ekici, Özgün"
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Characterizing the TTC rule via pair-efficiency: A short proof
Ekici, Özgün; Sethuraman, J. (Elsevier, 2024-01)In the object reallocation problem, Ekici (2023) showed that Top Trading Cycles (TTC) is the unique rule that is strategyproof, individual-rational, and pair-efficient. We provide a short proof of this characterization result. -
An equilibrium analysis of the probabilistic serial mechanism
Ekici, Özgün; Kesten, O. (Springer Science+Business Media, 2016-08)The prominent mechanism of the recent literature in the assignment problem is the probabilistic serial (PS). Under PS, the truthful (preference) proÖle always constitutes an ordinal Nash Equilibrium, inducing a random ... -
On approximate Nash equilibria of the two-source connection game
Çaşkurlu, B.; Açikalin, U. U.; Kizilkaya, F. E.; Ekici, Özgün (TÜBİTAK, 2022)The arbitrary-sharing connection game is prominent in the network formation game literature [1]. An undirected graph with positive edge weights is given, where the weight of an edge is the cost of building it. An edge is ... -
On existence of equilibrium under social coalition structures
Caskurlu, B.; Ekici, Özgün; Kizilkaya, F. E. (Cambridge University Press, 2022-02)In a strategic-form game, a strategy profile is an equilibrium if no viable coalition of agents (or players) benefits (in the Pareto sense) from jointly changing their strategies. Weaker or stronger equilibrium notions can ... -
On existence of equilibrium under social coalition structures
Caskurlu, B.; Ekici, Özgün; Kizilkaya, F. E. (Springer, 2020)In a strategic form game, a strategy profile is an equilibrium if no viable coalition of agents benefits (in the Pareto sense) from jointly changing their strategies. Weaker or stronger equilibrium notions can be defined ... -
On optimal toll design for bosporus crossings
Ekici, Özgün (Sosyoekonomi Society, 2022-10)For many years, two toll bridges served commuter demand to cross the strait called Bosporus in Istanbul, Turkey. An underground connection called the Eurasian tunnel had been recently launched to relieve the strait's ... -
On singleton congestion games with resilience against collusion
Caskurlu, B.; Ekici, Özgün; Kızılkaya, F. E. (Springer, 2021)We study the subclass of singleton congestion games in which there are identical resources with increasing cost functions. In this domain, we prove that there always exists an outcome that is resilient to weakly-improving ... -
Random mechanisms for house allocation with existing tenants
Ekici, Özgün (Elsevier, 2020-08)We study the house allocation problem with existing tenants: n houses (stand for "indivisible objects") are to be allocated to n agents; each agent needs exactly one house and has strict preferences; k houses are initially ... -
Reclaim-proof allocation of indivisible objects
Ekici, Özgün (Elsevier, 2013-09)We study desirability axioms imposed on allocations in indivisible object allocation problems. The existing axioms in the literature are various conditions of robustness to blocking coalitions with respect to agentsʼ ex ... -
The role of real estate and gold as inflation hedges: the Islamic influence
Gulseven, O.; Ekici, Özgün (Emerald Publishing Limited, 2021-04-06)Purpose This paper aims to understand how aversion to interest income in Islam may influence the demand for real estate and gold when inflation is rampant. Design/methodology/approach According to Markowitz's ... -
The Turkish appetite for gold: An Islamic explanation
Gülseven, O.; Ekici, Özgün (Elsevier, 2016-06)A significant constituent of household wealth in Turkey is gold. Families accumulate gold especially on a variety of cultural occasions such as female-only gold days, circumcision feasts, and engagement and wedding ceremonies. ...
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