Info For Participants

This page collects all the necessary information for ESSLLI 2021 participants. This page may be updated during the summer school.

The instructions consider all types of sessions, thus there could be some (very) minor differences between workshop sessions, lectures, event sessions. There will be one Zoom meeting for each session in the ESSLLI schedule, including invited talks and events.

Zoom Rooms and Sessions

All sessions will be held in "virtual rooms" (A, B, C, ..), which are Zoom meetings.
The Daily Schedule page will show the links to join the sessions (all participants have received Zoom passcodes for each room, by email).

The rooms will be open only during the scheduled sessions, as shown in the Daily Schedule page: if you attempt to enter a room that is not currently being used, you will simply be told that the "host" has not yet entered. Consider these as regular rooms: if you use a link displayed for a session that has yet to take place, you will instead enter the session that is currently running in that room.

Each session will have at least one chair (the lecturers, the workshop chairs, etc) and one person acting as Zoom host and managing the room.

We recommend downloading the Zoom client and enabling your camera feed for a better experience, especially during the discussions.

You need a Zoom account to enter the rooms, so create one in advance.

Info for presenters

If you will be a presenter during an ESSLLI session (e.g. for a paper presentation or during an event), please refer to this page. Lecturers, workshop organizers and event chairs are receiving specific instructions instead.

Questions and Answers

Rooms are configured by default so that regular attendees will not be able to use their microphones at all times. If you want to ask a question, please just write that you have a question in the chat (or click 'raise hand', under the 'reactions' menu item) and wait for the next Q&A time. As soon as possible (depending on the nature of the session), the lecturer/chair will ask one attendee at the time to pose their questions verbally (as this happens, the Zoom host will have enabled microphones). Remember to mute yourself afterwards.

It is of course possible that all microphones will be left enabled, if the chair of the session has decided so.

Evening lectures will be held as Zoom webinars, which allow attendees to write questions in a dedicated Q&A window.

Session recording and privacy

All sessions are recorded and the video will be made available online during ESSLLI and for 1 month after ESSLLI is over (then they will be deleted). Only to ESSLLI participants are given the passcodes to watch these videos.

The discussions at the end of each session (lecture, event, workshop session, etc.) will be edited out, but note that questions and discussions that happen during the session will be kept.

The videos will be in "active presenter mode", which means that only the slides/videos being shared will be on the video, in addition to a small screen showing the camera feed of the person currently talking. For this reason, if you are not a presenter, always keep your microphone disabled if you want to avoid that your camera feed is accidentally included in the recorded video. The camera feed of regular attendees will not be included in the video (unless they talk during a presentation, as just explained).


A Slack workspace has been set up for ESSLLI 2021. All participants have been invited to join (a personal invitation link received by email). You need a Slack account to join, which you can easily create for free. All urgent communications to participants will be done also through Slack, so it's a good idea to register.

Slack will also be used for asynchronous discussions about courses and papers, technical support, etc. This is particularly important for participants from time zones far away from CEST, so we encourage all lecturers and paper presenters to monitor the Slack workspace. Each ESSLLI course and workshop has its own channel in the workspace (use the search bar at the top or the channel browser on the left, if necessary.