Hypothesis Historia Periodical is a double-blind peer-review international journal in the field of Alternative and Alternate History (AH), cross-referencing the theme with all areas of knowledge and expertise, from Fine Arts to Natural Sciences, from Literature to Economy. It is published in English as part of the Casa Comum of the Rectorate of the University of Porto, Portugal, and has an ISSN number.

Founded by the members of Invicta Imaginaria, the informal creative collective for the Winepunk Universe and CETAPS – Centre for English, translation and Anglo-Portuguese Studies, in a partnership among Casa Comum, Invicta Imaginaria and several research centers, the journal aims at providing a space for the publication of original, significant and innovative studies in Alternate and Alternative History, with special focus on those intersecting other fields, such as Experimental Sciences, Fine Arts, or Economy.

Hypothesis Historia Periodical is a pluralist publication with no ideological affiliation and open to proposals and perspectives from all research methodologies.

According to the international academic and scientific good practices of the finest publications, Hypothesis Historia Periodical has the following type of double-blind peer-reviewed contributions: Articles (including Reviews), Invited Lecturers f2f Insights, and Round Table Chair Perspectives.

Other contributed articles, such as Opinion contributions, are not usually peer-reviewed, though they may be at the discretion of the editors, especially. Other forms of articles may also be peer-reviewed at the discretion of the editors. The final decision relating to a manuscript’s suitability for the Hypothesis Historia Periodical rests solely with the Editor.

It should be noted the following regarding two specific types of contributions:

• Round Table Chair Perspectives: this type of contribution is authored by chairs of the Oral Presentation Round Tables of the International Meeting of ‘What if?….’ World History, associated with the Hypothesis Historia Periodical. The Oral Presentation Round Tables are dialogue sessions and this type of contribution reflects the critical perspective of the chairs regarding the works presented, as well as the ensued dialogue and novelty of the themes to the field;
• Invited Lecturers f2f Insights: this type of contribution is authored by the invited lecturers for the Invited Lectures f2f sessions of the International Meeting of ‘What if?….’ World History, associated with the Hypothesis Historia Periodical. These are dialogue sessions where two renowned researchers and academics, from different areas of expertise, talk and debate ideas around a common Alternative/Alternate History or Alternative/Alternate History akin theme. The contribution is a critical essay of their lecture and interaction during the session. As such, there can be two parts regarding the same session, one for each invited lecturer.