The Publisher notifies the readers that the following article has been retracted.

‘Introduction’, Vivarium 55.1-3 (2017), 1-8, by Frédéric Goubier and Magali Roques, published in print on 18 July 2017, and published online on 14 July 2017.

In July 2020, the Publisher was notified of alleged plagiarism in the article ‘William of Ockham on the Instant of Change’, Vivarium 55.1-3 (2017), 130-151, by Magali Roques, published in print on 18 July 2017, and published online on 14 July 2017. The Publisher and the Journal Editors began an investigation into this article, and into other articles published by the same author in the Journal.

The Journal Editors confirmed with co-author Magali Roques that the article reproduced passages without proper attribution.

Further investigation revealed extensive plagiarism.

The contribution to the article by co-author Frédéric Goubier has not been called into question.

The retracted article will remain online to maintain the scholarly record, but digitally watermarked on each page as ‘Retracted’.