User:Aleph4

Hi everybody. I started editing Wikipedia in September 2003, and registered a few days later. As you can see from my list of contributions, I am mainly interested in mathematics, mainly mathematical logic. What does my name mean? Why the hell is it 4? Well, nobody knows, actually... If you want to leave me a message, please use my talk page. (See also Aleph-4 (talk · contribs).)