no English translation located. No published English translation of this text was located in the catalogues and series checked. Where only a non-English rendering or a translation of a daughter version exists, it is recorded below and does not close the gap. Treat this as a gap candidate, not as proof that no translation exists; the evidence names every source checked.
Why this is in the register
Checked 2026-11-13. The treatises open Chrestou's edition: vol. 1 is 'Logoi apodeiktikoi, antepigraphai, epistolai pros Barlaam kai Akindynon' (https://hollis.harvard.edu/discovery/search?query=any,contains,Gregoriou%20tou%20Palama%20Syngrammata%20Chrestou&tab=Everything&search_scope=MyInst_and_CI&vid=01HVD_INST:HVD2&offset=0 HOLLIS 'Palamas demonstrative treatises Apodictic' returns 0 records (https://hollis.harvard.edu/discovery/search?query=any,contains,Palamas%20demonstrative%20treatises%20Apodictic&tab=Everything&search_scope=MyInst_and_CI&vid=01HVD_INST:HVD2&offset=0 A Crossref query returns only studies of their Serbian Church-Slavonic translation - 'Aristotelian scholia in the Serbian Church-Slavonic translation of Gregory Palamas' Apodictic treatises on the procession of the Holy Spirit' (Glasnik Etnografskog instituta, 2024) and a 2025 follow-up - plus 'The Order (taxis) of Persons of the Holy Trinity in Apodictic Treatises of Gregory Palamas' (Philotheos, 2012). No English translation was located.
Palamas's systematic defence of the procession of the Holy Spirit and of the essence-energies distinction, written against the Latin Filioque; the only translation traced is a medieval Serbian Church-Slavonic one.
Existing translations recorded
None recorded in English. Non-English versions, where they exist, are named in the evidence above.
Electronic text
No open electronic text was verified for this work. The Greek/Coptic/Geʿez may exist only in a print or subscription edition (Migne, CSCO, TLG, CMCL).
Scanned witnesses
Scan search: no scan located. No scan located, and the usual Migne route is closed: PG 150 and PG 151 print Palamas but not this work. Verified by full-text grep of both text layers (150_djvu.txt and 151_djvu.txt, HTTP 200): no 'ἀποδεικτικ-', 'ἀποδειχτικ-' or 'demonstrativ-' heading, and the single 'ἐκπορεύσεως' hit in PG 150 (offset 2,217,915) sits inside Migne's 'Operum argumenta ex codd. Coislin.', i.e. a catalogue of manuscript contents, not the printed text. That catalogue is nevertheless the one concrete witness trail: it lists 'λόγος ἀποδεικτικὸς πρῶτος ... Fol. 15' and 'λόγος δεύτερος περὶ τῆς ἐκπορεύσεως ... Fol. 55 verso' as contents of Paris, BnF, Coislin 118 ('codex CXVIII, qui primus tomus inscribitur Operum Gregorii'). That shelfmark could not be verified digitally: BnF Archives et manuscrits 403, Gallica 403 (Cloudflare), BnF SRU HTTP 200 but no manuscript record for Palamas (only print records, including the Larchet French translation 'Traités apodictiques sur la procession du Saint-Esprit'), DigiVatLib search 403 with only fonds listings available. The modern edition (Chrestou, ΕΕΠΣ 1962-) is not on IA.
Harvard Hollis
Hollis query: Gregory Palamas — 301 record(s); match basis author_only.
"Gregory Palamas : the Hesychast controversy and the debate with Islam : documents relating to Gregory Palamas." Liverpool [England] : Liverpool University Press, 2020. https://hollis.harvard.edu/permalink/f/1s5nto6/99155722518603941
Gregory Palamas, Saint, 1296-1359. "Mary the Mother of God : sermons by Saint Gregory Palamas." South Canaan, PA : Mount Thabor Publishing, 2022. https://hollis.harvard.edu/permalink/f/1s5nto6/99158814965403941
Gregory Palamas, Saint, 1296-1359. "Mary the Mother of God : sermons by Saint Gregory Palamas." South Canaan, PA : Mount Thabor Pub., 2005. https://hollis.harvard.edu/permalink/f/1s5nto6/990101225800203941
Gregory Palamas, Saint, 1296-1359. "The saving work of Christ : sermons by Saint Gregory Palamas." Waymart, PA : Mount Thabor Pub., 2008. https://hollis.harvard.edu/permalink/f/1s5nto6/99158814966803941
Cite: Tergwame, “Demonstrative Treatises (on the Procession of the Holy Spirit)”
(greek gap dossier), 2026.
https://naxiai.com/christian/gaps/greek-gregory-palamas-logoi-apodeiktikoi