Laplacian Eigenvectors of Graphs - 2019 Fall ~ 2020 Spring

Book

Laplacian Eigenvectors of Graphs: Perron-Frobenius and Faber-Krahn Type Theorems by Türker Biyikoglu, Josef Leydold, Peter F. Stadler

[You may find a pdf version of the book in NSYSU library, or other institutes that have subscribe Springer.]

Participants

Jephian Lin, Chih-Wei Chen, Akeny Li, Yi-Hua Li, Daniel Radil, Ting-Ying Li, An-Rong Wu; all others are welcome.

General guidelines

  • It is better to be slow and clear than fast but vague---if you need more time, we may postpone the next speaker.

  • Find corresponding proofs if not provided---see the references of the book.

  • It is okay to have something not understood---we put the keywords at the bottom of the page, and we will conquer it at the end.

  • Be prepared by the scheduled time, though the schedule might change.

Schedule

We follow the regular venue and time below; it there is any change, it will be annotated in the schedule.

Venue: SC4013

Time: Tuesday 9:10 ~ 10:00 (2020 Spring)

Venue: SC4009-0 (the room next to the library on the 4th floor); Time: Thursday, 16:10 ~ 17:00 (2019 Fall)

  1. 12/13, Friday, 9:10 ~ 10:00; Introduction [~1.3; Jephian]

  2. 12/20, Friday, 9:10 ~ 10:00; Related matrices [~1.4; Jephian]

  3. 12/26, Thursday; Generalized Laplacian [~1.8; Jephian]

  4. 1/2, Thursday; Discrete Calculus [~2.7; Akeny]

  5. 1/9, Thursday; Perron--Frobenius Theorem [~2.8; YH Li]

  6. 3/5, Thursday; Perron--Frobenius Theorem [~2.8; YH Li]

  7. 3/12, Thursday; Perron--Frobenius Theorem [~2.8; YH Li]

  8. 3/19, Courant's Nodal Domain Theorem [~3.2; Jephian]

  9. 3/26, Fiedler's vector [~3.4; TY Li]

  10. 4/9, Courant--Herrmann Conjecture [~3.6; Daniel]

  11. 4/16, Nodal Domain on trees and cographs [~4.2; 陳冠穎]

  12. 4/23, Nodal Domain on other graphs [~4.3; AR Wu]

  13. 4/30, Hyperplane arrangement and Hillclimbing algorithm [~5.2; 魏齊]

  14. 5/7, Numerical experiments [~5.4; 郭明憲]

  15. 5/14, Faber--Krahn type inequalities [~7.9; 黃進璋]

  16. 5/21, Unweighted trees and semiregular trees [~6.4; 黃齡誼]

  17. 5/28, Rearrangements [~6.5; 黃元亨]

  18. 6/4, Perturbations and branches [~end; 陳伯誠]

Keywords to be explored later

  • Elementary landscape (p. 4)

  • cut (p. 13)

Related papers

  • R. Merris. Laplacian matrices of graphs: A survey. Lin. Algebra Appl., 197–198:143–176, 1994.

  • M. Belkin and P. Niyogi. Laplacian eigenmaps and spectral techniques for embedding and clustering. In Advances in Neural Information Processing Systems 14 (NIPS 2001), pages 585–591, Cambridge, 2002. MIT Press.

  • T. Pisanski and J. Shawe-Taylor. Characterising graph drawing with eigenvectors. J. Chem. Inf. Comput. Sci., 40:567–571, 2000.