# Wave Front Set of Solutions to Sums of Squares of Vector Fields

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*Paolo Albano; Antonio Bove*

#### Table of Contents

# Table of Contents

## Wave Front Set of Solutions to Sums of Squares of Vector Fields

- Chapter 1. Introduction vii8 free
- Chapter 2. The Poisson–Treves Stratification 114 free
- Chapter 3. Standard Forms for a System of Vector Fields 720
- Chapter 4. Nested Strata 2740
- Chapter 5. Bargman Pseudodifferential Operators 2942
- Chapter 6. The “A Priori” Estimate on the FBI Side 3346
- Chapter 7. A Single Symplectic Stratum 4154
- Chapter 8. A Single Nonsymplectic Stratum 5164
- Chapter 9. Microlocal Regularity in Nested Strata 5568
- Chapter 10. Known Cases and Examples 6174
- Appendix A. A Bracket Lemma 6376
- Appendix B. Nonsymplectic Strata Do Not Have the Reproducing Bracket Property 6982
- Bibliography 7184
- Index 7386 free