TY - JOUR T1 - The Global Cauchy Problem for the Critical and Subcritical Nonlinear Schrodinger Equations in Hs JO - Journal of Partial Differential Equations VL - 2 SP - 173 EP - 192 PY - 1998 DA - 1998/11 SN - 11 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/jpde/5564.html KW - Nonlinear Schrödinger equation KW - Cauchy problem KW - critical and subcritical powers in H^s KW - global existence AB - In this paper, the local and global existence of solutions for the Cauchy problem of the critical and subcritical nonlinear Schrödinger equations in H^s (s ≥ 2) is studied by using the manner of formal differentiation with respect to time. Some conjectures posed by Cazenave and Weissler in [1] are verified.