Thesis contributions: where/how to specify them? I am a physics student and I am presently writing my Master thesis.

My work has been a theoretical/numerical analysis of data produced by a simulation written by my advisor.

I would like to write explicitly somewhere that I wrote all the programs for the data analysis and performed the analysis itself, but the simulation code has been written by my advisor.

Where/how should I include this remark?

The thesis is structured as follows:


Contents
Introduction
Methods
Results
Discussion and Conclusions
Appendices
Acknowledgements
Bibliography
Usually that is included in the Preface, which comes in the beginning of the thesis. Some call it 'Declaration of Authorship' instead of 'Preface'. See for example these guidelines.