@Todd and Steve, I would not agree with Steve, I do not see big attitude problem with applied math question, just I think not so many users are interested in it. (Although there are some examples of attitude which Steve is talking about in my practice here e.g. <a href="http://mathoverflow.net/questions/79290/how-to-do-mgram-schmidt-orthogonalization-with-integers-real-life-problem">http://mathoverflow.net/questions/79290/how-to-do-mgram-schmidt-orthogonalization-with-integers-real-life-problem</a> this one was almost clos