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Instituto de Matemáticas de la UNAM · Video summary

12 Encuentro Jessica Jaurez

Jessica Jaurez explores the tangency of foliations in the context of differential equations and their analytic classification.

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The digest

This talk presents a detailed study of holomorphic foliations on complex surfaces, specifically focusing on the analytic classification of pairs of foliations and the properties of their tangency curves. It explores how these tangency curves serve as analytical invariants, how they behave under coordinate changes, and their relationship with the analytic classification spaces of the foliations themselves. The results address fundamental questions for mathematicians working in complex dynamical systems, foliation theory, and singularity theory.

High-Level Overview

The presentation delves into the analytic classification of pairs of holomorphic foliations defined near the origin in complex two-dimensional spaces, examining the geometric and analytic properties of their tangency curves—curves where two distinct foliations meet tangentially. These tangency curves are shown to be powerful invariants that reflect deep structural information about the foliations. The talk systematically develops frameworks to understand how these invariants behave under analytic equivalences and coordinate changes, connecting these ideas to the broader classification problem of complex foliations. It highlights recent advances in describing these classes via infinite-dimensional functional spaces and explores how the tangency curves' analytic classes relate to the foliations’. This is crucial for researchers interested in complex geometry, singular foliations, and dynamical systems.

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The full 7-minute article, 17 more sections, and every new episode from Instituto de Matemáticas de la UNAM and the creators you follow.

  1. Structured Deep Dive
  2. Introduction to Holomorphic Foliations and Tangency Curves (03:00–06:00)
  3. Analytical Equivalence of Foliation Pairs and Tangency Curves (10:00–13:30)
  4. Analytic Classification Spaces and Invariants (15:30–26:00)
  5. Analytic Classification Space of Foliation Pairs (26:00–30:00)
  6. Tangency Curves After the Blow-Up (31:00–37:40)
  7. Realization Problem and Analytic Normal Forms (38:00–44:00)
  8. Classification Space of Tangency Curves (44:00–46:00)
  9. Final Global Diagram and Relations Between Invariants (46:00–49:30)
  10. Discussion Highlights (50:00–55:55)
  11. Key Frameworks and Models
  12. 1. Tangency Curve of a Foliation Pair
  13. 2. Classes of Foliations
  14. 3. Analytic Classification Space
  15. 4. Normalizing Transformations
  16. Practical Implications & Takeaways
  17. Action-Oriented Summary
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