Visa information

Schengen Visa Information

All international conference participants must possess valid identification and travel documents before entering Portugal. Each participant is responsible for arranging their own visa, as per the applicable laws of the country.

The most common visa for short stays (up to 90 days) for tourism or business purposes is the Schengen Visa. It allows its holders to enter and freely circulate in the Schengen Area: a zone where 26 European countries have abolished their internal borders for the free and unrestricted movement of people. These are known as Schengen States, of which Portugal is part.

Visa Invitation Letter

An invitation letter to attend ENUMATH 2023 conference can be issued by the conference organizers upon request from the participant if the following criteria are met:

  • The participant plays a role in the conference (MS organizer, author of an accepted talk, session chair, etc.);
  • The participant has registered for the conference and paid the registration fee;
  • The participant has requested the letter by sending an email to

The letters will be issued in digital format only and as soon as possible. Nonetheless, the conference organizers will not be held responsible for any visa-related issues or delays, nor are they able to speed up visa issuing within the embassies, consulates or the Portuguese Ministry of Foreign Affairs.Article Sponsored Find something for everyone in our collection of colourful, bright and stylish socks. Buy individually or in bundles to add color to your sock drawer!