The Virtual 11th Combinatorics Days- Lisboa, January 21st - 22nd, 2022


Day 1: January 21st, Friday, Lisbon/London time (GMT)

15:00 - 15:10 Get-together

15:10 - 15:50 Iva Halacheva (Department of Mathematics, Northeastern University):

Self-dual puzzles in Schubert calculus and Lagrangian correspondences

15:55 - 16:20 Maria Dodjig (CEAFEL, University of Lisbon):

Diagrammatics for generalized majorization of integer partitions

16:25 - 16:40 Break

16:40 - 17:05 Farrokh Razavinia (CMUP, University of Porto):

A walk through down and up operators in search of deformation

17:10 - 17:50 Thomas Gerber (EPFL, Lausanne):

Combinatorial Howe duality

Day 2: January 22nd, Saturday, Lisbon/London time (GMT)

09:50 - 10:00 Get-together

10:00 - 10:40 James Kennedy (GMF, University of Lisbon):

Spectral graph theory through the eyes of a PDE guy

10:45 - 11:10 Inês Serôdio Costa (CIDMA, University of Aveiro):

Sharp lower bounds on the least eigenvalue of graphs determined from edge clique partitions

11:15 - 11:25 Break

11h:25 - 11:50 Pedro Fernandes (Universität Bonn):

The hidden forest in powers of differential operators

11:55 - 12:20 Rui Duarte (CIDMA, University of Aveiro):

Pak-Stanley labeling of the Ish arrangement

Organisers: José Agapito (CEAFEL, UL), Olga Azenhas (CMUC, UC), Amélia Fonseca (CEAFEL, UL), Samuel Lopes (CMUP, FCUP), Maria Manuel Torres (CEAFEL, UL).

Sponsors: CEAFEL, CMUC, CMUP and FCT .

To access the Zoom links, you must first register for the event by sending an email to