Hi all. I heard about the site the the Sec Web. Anyway, I'm a math major with philosophy and physics minors, and I'm going to grad school in math this fall. I'm doing my senior seminar on l2, the set of square summable sequences. I'd like to close my paper and my talk on some applications, but I can't find anything. I know that L2 has some apps for QM, but is there anything you can do with l2? Anything with QM, general physics, or numerical analysis? Thanks in advance.