%0 Journal Article %T On Invariance and Convergence in Time Complexity theory %A Mircea Alexandru Popescu Moscu %J Computer Science %D 2004 %I arXiv %X This article introduces three invariance principles under which P is different from NP. In the second part a theorem of convergence is proven. This theorem states that for any language L there exists an infinite sequence of languages from O(n) that converges to L. %U http://arxiv.org/abs/cs/0411033v1