PhD Day – Edition 2025

Date: May 6, 2025
Place: A008
Chairs: Charlie Jacomme and Engel Lefaucheaux

Each presentation will last a total of maximum 30 minutes (20 minutes talks + 10 minutes of question/setting up). We encourage all talks to be given in English.

Tentative schedule

  • 9h30 – 10h30: Florian Moser, Joannes Guichon
  • 10h30 – 10h45: Coffee break 1
  • 10h45 – 12h15: Colin Blake, Sarah Dépernet, Léo Louistisserand
  • 12h15 – 14h00: pizzas!
  • 14h00 – 15h30: Benjamin Testart, Thomas Vinet, Kathleen Barsse
  • 15h30 – 15h45: Coffee break 2
  • 16h00 – 17h00: Quentin Jacqmin, Benjamin Izart

Detailed program

Joannes Guichon – “B2B debt netting : temporal considerations”

Abstract : “In the business-to-business (B2B) landscape, the temporal dynamics of invoice settlements are critical to the financial health of companies. Recurrent late payments create a network of interlocking debts, where each firm is simultaneously a creditor and a debtor. This situation can provoke liquidity crises and systemic risk. A method to reduce such risk is the integral netting mechanism, in which selected invoices are fully settled by injecting minimal external liquidity at well-chosen points in the network.  Methods have been proposed for B2B transactions in a fixed time period. A central question is: how to adapt such netting to a real-world scenario in which invoices arrive continuously over time ?”

Florian Moser – “Internet Voting without trusting the end-user’s device – and a formal proof of security”

Abstract: When performing elections over the internet, similar guarantees as in regular elections must be safeguarded: An internet voting system must guarantee privacy (hence the individual voter’s choice remains private) and correctness (hence all votes are counted as cast). We present a mechanism that is able to achieves these guarantees without trusting the end-users device. Further, we present a formal proof over the system’s privacy and correctness.

WIP

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