1 INTRODUCTION

2 THE XMM CLUSTER SURVEY
2.1 Background and current status
2.2 The XCS selection function

3 FROM X-RAY OBSERVABLES TO MASS
3.1 Modeling summary
3.2 The X-ray temperature to mass relation
3.3 The X-ray luminosity to temperature relation
3.4 Photometric redshifts
3.5 X-ray temperature

4 FROM MASS TO COSMOLOGY AND CONSTRAINTS
4.1 The mass function
4.2 Cosmology
4.3 Combining observables and cosmology
4.4 Likelihood

5 RESULTS
5.1 Labeling
5.2 Expected cluster distributions
5.3 Constraints: without measurement errors
5.4 Constraints: with measurement errors
5.5 Constraints: systematic biases

6 DISCUSSION AND CONCLUSIONS