Category Archives: Set theory

Moving Around a Sphere – Hilbert Spaces Part 3

Posted on 10/27/2012 by Ryan

Well, it’s been a long time since I’ve written a post, but I have a bit of time tonight and I really don’t feel like doing homework tonight, so let’s talk about some mathematics! Last time I wrote, I promised … Continue reading →

Posted in Analysis, Set theory | Leave a comment

AC, part III: Choice in context

Posted on 09/09/2012 by Z Norwood

Wow, it’s been a long time since my last post. Sorry about that. I intend (though I’ll make no promises) to post a bit more regularly now. This final post in my ac series was advertised to be a post … Continue reading →

Posted in AC, Logic, Set theory | 6 Comments

Consider the following assertion: For any function from to the countable subsets of , there are real numbers and such that and . Can you prove it? Can you disprove it? If you can’t prove or disprove it, does your … Continue reading →

Posted on 03/03/2012 by Z Norwood | 17 Comments