TY - JOUR T1 - Global Weak Solutions of the Cauchy Problem to a Hydrodynamic Model for Semiconductors JO - Journal of Partial Differential Equations VL - 4 SP - 369 EP - 383 PY - 1999 DA - 1999/12 SN - 12 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/jpde/5549.html KW - Hydrodynamic model KW - Lax-Friedrichs scheme KW - compensated compactness AB - In this paper we are concerned with the global existence of weak solutions of the Cauchy problem for a simplified one-dimensional hydrodynamic model for semiconductors. Convergence of approximate solutions derived by the fractional step Lax-Friedrichs scheme is established by using the compensated compactness method.