This is the 11th edition of the Combinatorics Days, to be held online, Zoom platform, on the 21st and the 22nd of January.

It is a joint organization of CEAFEL, CMUC and CMUP.

To access the Zoom links, you must first register for the event by sending an email to comb11@fc.ul.pt.

Full schedule programme: http://www.mat.uc.pt/~combdays/virtual11thcombday.