Geometry and Topology of Periodic Point Sets, for Example Crystals

Geometry and Topology of Periodic Point Sets, for Example Crystals

Applied Algebraic Topology Network via YouTube Direct link

Intro

1 of 25

1 of 25

Intro

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Geometry and Topology of Periodic Point Sets, for Example Crystals

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  1. 1 Intro
  2. 2 Overview
  3. 3 What is a (periodic) crystal?
  4. 4 What is a periodic crystal not?
  5. 5 Periodic point set
  6. 6 Finite representation not unique
  7. 7 Define equivalence relation
  8. 8 Computing distance
  9. 9 Comparing crystals
  10. 10 Why do we want a fingerprint function?
  11. 11 Packing and covering radii
  12. 12 Proof Sketch: Computability using Brillouin zones
  13. 13 The density fingerprint and the persistence fingerprint!
  14. 14 Persistent homology
  15. 15 Order k persistence
  16. 16 Definition (Persistence fingerprint function )
  17. 17 Definition: Infinitely many holes
  18. 18 Definition: Torus
  19. 19 Definition: Features per volume
  20. 20 Computing: Features per volume
  21. 21 Definition (Persistence fingerprint function 4)
  22. 22 Capturing non-cubic cycles
  23. 23 Future Work
  24. 24 Bibliography
  25. 25 Alternative distance between crystals

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