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Infinity and AlephNull 
20090414 

From Justin: Yes, I am reading the Paul Halmos book on Set theory, thanks for telling me how to get it! I was just wondering from your last answer though if the positive real infinity of calculus then corresponds to Alephnull? I am sorry if this is a similar question to the one I asked before but I was just wondering about this!
All the Best,
Justin Answered by Robert Dawson. 





Positive real infinity and Alephnull 
20090409 

From Justin: Hello, I was just wondering why does the positive real infinity correspond to Alephnull? Thanks a lot for answering my question!
Justin Answered by Ami and Robert Dawson. 


