{"id":3983,"date":"2016-12-02T14:11:14","date_gmt":"2016-12-02T14:11:14","guid":{"rendered":"https:\/\/policonomics.com\/es\/?p=3983"},"modified":"2018-03-09T09:10:12","modified_gmt":"2018-03-09T09:10:12","slug":"duopolio-bertrand","status":"publish","type":"post","link":"https:\/\/policonomics.com\/es\/duopolio-bertrand\/","title":{"rendered":"Duopolio de Bertrand"},"content":{"rendered":"<p>En algunos casos, la competencia mediante la realizacio\u0301n de ajustes en el precio es ma\u0301s lo\u0301gica que la competencia mediante cambios en las cantidades ofertadas, especialmente en el corto plazo. Adema\u0301s, una de las hipo\u0301tesis del <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/policonomics.com\/es\/duopolio-cournot\/\">modelo de duopolio de Cournot<\/a><\/em><\/span> afirma que las empresas ofertara\u0301n un producto homoge\u0301neo. Teniendo en cuenta esto, <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/policonomics.com\/es\/joseph-bertrand\/\">Bertrand<\/a><\/em><\/span>propone una alternativa a <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/policonomics.com\/es\/antoine-cournot\/\">Cournot<\/a><\/em>.<\/span> Si consideramos el modelo de Bertrand desde una perspectiva de la <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/policonomics.com\/es\/teoria-juegos\/\">teori\u0301a de juegos<\/a><\/em><\/span>, se puede analizar como un <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/policonomics.com\/es\/juego-simultaneo\/\">juego simulta\u0301neo<\/a><\/em><\/span> donde la eleccio\u0301n estrate\u0301gica se basa en el precio en vez de la cantidad.<\/p>\n<p>En este modelo los consumidores comprara\u0301n los bienes de la empresa que ofrezca el precio ma\u0301s bajo. De esto se puede intuir que el <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/policonomics.com\/es\/equilibrio-nash\/\">equilibrio de Nash<\/a><\/em><\/span> sera\u0301 aquel en el que ambas empresas fijan el mismo precio.<br \/>\nSi asumimos <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/policonomics.com\/es\/analisis-costes\/\">funciones de coste<\/a><\/em><\/span> iguales y constantes, la demanda para cada empresa queda definida con la siguiente formula:<\/p>\n<p><a href=\"https:\/\/policonomics.com\/wp-content\/uploads\/2016\/02\/formula-es-duopolio-Bertrand-demandas.png\" rel=\"lightbox\"><img decoding=\"async\" class=\"aligncenter wp-image-5694\" src=\"https:\/\/policonomics.com\/wp-content\/uploads\/2016\/02\/formula-es-duopolio-Bertrand-demandas-300x138.png\" alt=\"Formula - Duopolio de Bertrand - Demandas\" width=\"196\" height=\"90\" srcset=\"https:\/\/policonomics.com\/wp-content\/uploads\/2016\/02\/formula-es-duopolio-Bertrand-demandas-300x138.png 300w, https:\/\/policonomics.com\/wp-content\/uploads\/2016\/02\/formula-es-duopolio-Bertrand-demandas-768x352.png 768w, https:\/\/policonomics.com\/wp-content\/uploads\/2016\/02\/formula-es-duopolio-Bertrand-demandas-600x275.png 600w, https:\/\/policonomics.com\/wp-content\/uploads\/2016\/02\/formula-es-duopolio-Bertrand-demandas-560x257.png 560w, https:\/\/policonomics.com\/wp-content\/uploads\/2016\/02\/formula-es-duopolio-Bertrand-demandas.png 935w\" sizes=\"(max-width: 196px) 100vw, 196px\" \/><\/a><\/p>\n<p>El equilibrio de Bertrand ocurre cuando <em>P1=P2=CM<\/em>, siendo <em>CM<\/em> el <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/policonomics.com\/es\/coste-medio-marginal\/\">coste marginal<\/a><\/em><\/span>, dando el mismo resultado que bajo <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/policonomics.com\/es\/competencia-perfecta\/\">competencia perfecta<\/a><\/em><\/span>.<\/p>\n<p>La lo\u0301gica es simple: si el precio de ambas empresas es igual pero el coste marginal es menor, existira\u0301 un incentivo por parte de ambas empresas a disminuir el precio y hacerse con el mercado. Por ello, el u\u0301nico equilibrio en el que ninguna de las empresas estara\u0301 tentada a desviarse sera\u0301 aquel equilibrio en el que el precio sea igual al coste marginal.<\/p>\n<p><a href=\"https:\/\/policonomics.com\/wp-content\/uploads\/2016\/02\/Duopolio-de-Bertrand.jpg\" rel=\"lightbox\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter wp-image-3665\" src=\"https:\/\/policonomics.com\/wp-content\/uploads\/2016\/02\/Duopolio-de-Bertrand-300x291.jpg\" alt=\"Duopolio de Bertrand\" width=\"310\" height=\"300\" srcset=\"https:\/\/policonomics.com\/wp-content\/uploads\/2016\/02\/Duopolio-de-Bertrand-300x291.jpg 300w, https:\/\/policonomics.com\/wp-content\/uploads\/2016\/02\/Duopolio-de-Bertrand-560x542.jpg 560w, https:\/\/policonomics.com\/wp-content\/uploads\/2016\/02\/Duopolio-de-Bertrand.jpg 570w\" sizes=\"(max-width: 310px) 100vw, 310px\" \/><\/a><\/p>\n<p>El resultado del modelo implica una paradoja, conocida como la paradoja de Bertrand: en el caso de <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/policonomics.com\/es\/competencia-imperfecta\/\">competencia imperfecta<\/a><\/em><\/span> (aqui\u0301, un duopolio), donde existe un fuerte incentivo a <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/policonomics.com\/es\/colusion\/\">coludir<\/a><\/em><\/span>, terminamos con el mismo resultado que en competencia perfecta. El equilibrio no se sostiene con funciones asime\u0301tricas debido a que la empresa con costes marginales menores se hara\u0301 con todo el mercado, convirtie\u0301ndose asi\u0301 en un <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/policonomics.com\/es\/monopolio\/\">monopolio<\/a><\/em><\/span>. Un gran ana\u0301lisis de esta paradoja, conocido como el <em><span style=\"text-decoration: underline;\"><a href=\"https:\/\/policonomics.com\/es\/duopolio-edgeworth\/\">modelo de duopolio de Edgeworth<\/a><\/span>\u00a0<\/em>o duopolio Bertrand-Edgeworth, fue desarrollado por <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/policonomics.com\/es\/francis-ysidro-edgeworth\/\">Francis Y. Edgeworth<\/a><\/em><\/span> en su obra \u201cThe Pure Theory of Monopoly\u201d (La teori\u0301a pura del monopolio), de 1897.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>En algunos casos, la competencia mediante la realizacio\u0301n de ajustes en el precio es ma\u0301s lo\u0301gica que la competencia mediante cambios en las cantidades ofertadas, especialmente en el corto plazo. Adema\u0301s, una de las hipo\u0301tesis del modelo de duopolio de Cournot afirma que las empresas ofertara\u0301n un producto homoge\u0301neo. Teniendo en cuenta esto, Bertrandpropone una [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[345,126],"tags":[],"class_list":["post-3983","post","type-post","status-publish","format-standard","hentry","category-microeconomia-tes","category-termino-es"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"En algunos casos, la competencia mediante la realizacio\u0301n de ajustes en el precio es ma\u0301s lo\u0301gica que la competencia mediante cambios en las cantidades ofertadas, especialmente en el corto plazo. Adema\u0301s, una de las hipo\u0301tesis del modelo de duopolio de Cournot afirma que las empresas ofertara\u0301n un producto homoge\u0301neo. Teniendo en cuenta esto, Bertrandpropone una\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Lope Gallego\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/policonomics.com\/es\/duopolio-bertrand\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"es_ES\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Policonomics - Economics made simple\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Duopolio de Bertrand - Policonomics\" \/>\n\t\t<meta property=\"og:description\" content=\"En algunos casos, la competencia mediante la realizacio\u0301n de ajustes en el precio es ma\u0301s lo\u0301gica que la competencia mediante cambios en las cantidades ofertadas, especialmente en el corto plazo. 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Adema\u0301s, una de las hipo\u0301tesis del modelo de duopolio de Cournot afirma que las empresas ofertara\u0301n un producto homoge\u0301neo. 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