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Szimultán Hotelling-modell Cobb-Douglas-hasznosságfüggvénnyel
[A simultaneous Hotelling model with a Cobb-Douglas utility function]

Author

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  • Kelemen, József

Abstract

A Hotelling-keretrendszer (1929) napjainkban is igen sikeres. Ennek ellenére néhány feltevése nem magától értetődő, például az, hogy a háztartásokat csak rezervációs áruk jellemzi. Ebből adódóan a háztartások viselkedését egy Cobb-Douglas-féle hasznossági függvénnyel definiáljuk. Ez a fogyasztóknak egy folytonos és elasztikus egyéni keresleti függvényt eredményez, valamint egyéb új mechanizmusokat is hoz a modellbe, amelyekre a szakirodalom már korábban felhívta a figyelmet. Mindezek eredményeként egyrészt a jövedelem változója játssza a rezervációs ár szerepét, korlátozza az árakat. Másrészt a jövedelem és az árak befolyásolják a közömbös fogyasztó elhelyezkedését, aminek a hatása több csatornán keresztül érvényesül. Az új modell lényegében nem tér el a korábbi eredményektől. Ha a jövedelem és a szállítási költség aránya magas, akkor a piac közepén lévő Bertrand-verseny az egyetlen egyensúly. Ha túl alacsony, akkor a vállalatok monopóliumként viselkedhetnek. E mellett a két lehetőség mellett van még egy harmadik is, ahol a vállalatok egymással versenyeznek, de elég piaci erejük van az árakat a határköltség felett tartani.* Journal of Economic Literature (JEL) kód: L10, R10.

Suggested Citation

  • Kelemen, József, 2020. "Szimultán Hotelling-modell Cobb-Douglas-hasznosságfüggvénnyel [A simultaneous Hotelling model with a Cobb-Douglas utility function]," Közgazdasági Szemle (Economic Review - monthly of the Hungarian Academy of Sciences), Közgazdasági Szemle Alapítvány (Economic Review Foundation), vol. 0(1), pages 14-30.
    • Handle: RePEc:ksa:szemle:1882
    DOI: 10.18414/KSZ.2020.1.14
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    References listed on IDEAS

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    More about this item

    JEL classification:

    • L10 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - General
    • R10 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General Regional Economics - - - General

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