Zerahiah the Greek, also known in Hebrew as Zerachiah ha-Yavani and by the acronymic nickname Ra'Za'H, was a Greek Jewish ethicist who lived in the Byzantine Empire in the thirteenth or fourteenth century. Almost nothing is known of his life beyond his authorship of an ethical work titled Sefer ha-Yashar, a title later confused with an unrelated halakhic work of the same name and mistakenly attributed to the tosafist Jacob Tam.
Facts
Tradition
Tradition (category) Classification
NationalityByzantine Empire (Historical) 1 Notable Publication Connections
In Tradition
Entity-backed identity for the tradition-category enum value this philosopher already carries, resolved to a philosophy school by an explicit value-to-entity map (phase 3 bucket conversion, docs\design_entity_backed_browse_buckets_20260928.md). The tradition fact itself, with its own citation, stays on the philosopher unchanged.
In the Other Atlases
Sources
1. Wikipedia: Zerahiah the Greek
Body, opening paragraph
Sefer ha-Yashar
Lead section, nationality sentence
Rabbi Zerachiah the Greek (in Hebrew, Zerachiah ha-Yavani or ha-Yewani; sometimes known by the acronymistic nickname "Ra'Za'H") was a Greek-Jewish ethicist who resided in the Byzantine Empire in the thirteenth or fourteenth century.
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