Seymour is Seventy

A conference honouring the seventieth birthday of Paul Seymour.

(September 14, 2020) Due to the COVID-19, the organizers decided to postpone the conference “Seymour is Seventy” to June 14-18, 2021 tentatively. The final decision will be made at the beginning of 2021.

(March 23, 2020) Due to the COVID-19, the organizers decided to postpone the conference “Seymour is Seventy”. Seymour remains young until further notice.


Important Dates

  • Deadline for poster submission: March 31, 2020
  • Notification of acceptance of posters: April 3, 2020
  • Early bird registration: April 12, 2020
  • Late registration: May 13, 2020
  • Conference: June 15 – 19, 2020
  • Tentative date: June 14-18, 2021


ENS de Lyon, France. (Travel Instruction)

Plenary Speakers

Submit a poster

Poster submission to Seymour is Seventy is open.

  • Deadline to submit a poster: March 31, 2020.
    Late submissions will be considered, with no guarantee on the date of acceptance.
  • Notification of acceptance: April 3, 2020.
  • Instruction: Submit a pdf file on website, either the pdf of the poster or a paper on which the poster will be based on. Submission website:


Click here ( to register until April 12, 2020 (early bird) and until May 13, 2020 (late).

Response to the COVID-19

In the case of canceling the whole conference due to the international outbreak of COVID-19, the registration fees will be refunded.




Remark: SGT 2020

A School on Graph Theory will take place a week before Seymour is Seventy from June 07 to June 12, 2020, in Murol (near Clermont-Ferrand, 160km from Lyon), France.


The school will consist of three series of lectures on the following topics: