Thanks a lot for the responses and links.

I would need a little time to go through all the links mentioned here. I will probably get back with more questions after I am done.

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Out of my mind. Back in five minutes.

An infinite number of mathematicians walk into a bar. The first one orders a beer. The second orders half a beer. The third, a quarter of a beer. The bartender says "You're all idiots", and pours two beers