Membership to Crans is free for (former) users of ENS Paris-Saclay and for former members of the organisation. Send an email to contact@crans.org. Due to a maintenance from the ENS, all of Crans services will be unavailable from 07-31-2023 6 AM to 07-31-2023 11 PM. Moreover, interruptions are possible during Saturday the 29th and Sunday the 30th.

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