Dear Hongsheng, You can find the answer in http://en.wikipedia.org/wiki/Ab_initio
Below is what is described on the webpage:
- [Pw_forum] ab initio vs. first principles. Hongsheng Zhao
- [Pw_forum] ab initio vs. first principles. Hongsheng Zhao
- [Pw_forum] ab initio vs. first principles. Leonardo Matheus
- [Pw_forum] ab initio vs. first principles. David Farrell
- [Pw_forum] ab initio vs. first principles. Stefano Baroni
- [Pw_forum] ab initio vs. first principles. Eyvaz Isaev
- [Pw_forum] ab initio vs. first principles. Stefano Baroni
- [Pw_forum] ab initio vs. first principles. Hongsheng Zhao
