2 THE LAMOST SPECTROSCOPIC SURVEY OF THE GALACTIC ANTI-CENTER

3 THE LSS-GAC WD SAMPLE

4 STELLAR PARAMETERS AND DISTANCES

5 THE LSS-GAC DA WD LUMINOSITY AND MASS FUNCTIONS, AND THE DA WD FORMATION RATE

6 THE LSS-GAC SIMULATED DA WD LUMINOSITY, MASS AND CUMULATIVE AGE FUNCTIONS

7 DISCUSSION

8 SUMMARY AND CONCLUSIONS