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UBA - CienciaS • Ver Tema - [Resuelto], P(2-2C 2009)-9
UBACS Q&A Foro WikiCS
Fecha actual 15 May 2024, 23:20

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 Asunto: [Resuelto], P(2-2C 2009)-9
NotaPublicado: 17 Sep 2009, 15:18 
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Registrado: 25 Sep 2008, 16:14
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Dice: Sea un conjunto. Probar que son equivalentes:

a) A es infinito (i.e. tiene un subconjunto en biyeccion con N)
b)Para todo existe una funcion biyectiva
c) Para todo , existe una funcion biyectiva

La verdad para ninguna de las tres implicaciones se me ocurre nada asi que cualquier ayuda es bienvenida
gracias


Última edición por akd mia el 10 Oct 2009, 18:07, editado 1 vez en total

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 Asunto: Re: [No Resuelto], P(2-2C 2009)-9
NotaPublicado: 18 Sep 2009, 00:33 
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Registrado: 17 May 2008, 23:04
Mensajes: 812
Acá estaba tratando de hacer un apunte de cardinalidad que no pude seguir por ausencia de ganas. Lo gracioso(y oportuno) es que terminó con la implicación (o sea... está explicado qué hacer pero no terminada esta implicación.). Fijate si te sirve eso. Prometo completar ese apunte de cardinalidad en un futuro
Saludos!



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I offer her that kernel of myself that I have saved, somehow; the central heart that deals not in words, traffics not with dreams and is untouched by time, by joy, by adversities
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 Asunto: Re: [No Resuelto], P(2-2C 2009)-9
NotaPublicado: 19 Sep 2009, 15:56 
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gracias marce


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