Open Access Policy

Principia meets the DOAJ definition of open access by providing unrestricted public access to all its content, in accordance with the principle that free access to research fosters greater global knowledge exchange. Accordingly, the journal follows the Diamond Open Access model.

All content is published free of charge, with no submission, publication, or access fees. Published manuscripts are not subject to an embargo period, and user registration is not required to read the content.

Authors grant exclusive rights of first publication to Principia, while the work is simultaneously licensed under the Creative Commons Attribution–NonCommercial–NoDerivatives (CC BY-NC-ND) 4.0 International License.

This license permits access, downloading, copying, printing, sharing, reuse, and distribution of the articles, provided that the source is properly cited and authorship is duly acknowledged. In such cases, no additional permission from the authors or the editors is required. Authors are authorized to enter into separate additional agreements for the non-exclusive distribution of the published version of the work (e.g., publication in an institutional repository or as a book chapter).

The editorial workflow is managed using the Open Journal Systems software, an open-source platform developed by the Public Knowledge Project. The use of this system enhances transparency, enables information tracking, and improves the academic and public quality of the research.