{"tenant":{"alias":"atlas"},"concept":{"id":"0bf1ad3b-34a8-4eec-a330-b7cd74eb21fb","title":"Overview of Muhammad al-Idrisi's empirical cartography and medieval geographic masterworks","abstract":"A biographical and methodological profile of twelfth-century Arab geographer Muhammad al-Idrisi, highlighting his collaboration with Norman King Roger II in Palermo. The text details his empirical verification framework, synthesizing classical sources with traveler testimonies to create the Tabula Rogeriana and Kitab Nuzhat al-Mushtaq. It examines his early life, cross-cultural synthesis, and lasting legacy in cartography and exploration.","abstract_source":"reused","kind":"reference","domain":"knowledge-management","scope":"overview","generality":0.85,"member_count":1,"is_passthrough":true,"updated_at":"2026-10-24T23:04:33.652Z","has_report":false,"tier":"facts","articles":[{"article_id":"64c1e191-488c-47db-9b52-6af2dfbe31ce","identifier":"muhammad-al-idrisi-2026-07-03.md","short_title":"Medieval Empirical Cartography Masterworks","aboutness_line":"Overview of Muhammad al-Idrisi's empirical cartography and medieval geographic masterworks","kind":"reference","domain":"knowledge-management"}],"articles_total":1,"articles_returned":1,"articles_truncated":false,"articles_offset":0,"articles_next_offset":null,"facts":[{"article_id":"64c1e191-488c-47db-9b52-6af2dfbe31ce","id":"1157a452-84e9-40ca-a5c3-80085b41fb15","type":"fact","subject":"Muhammad al-Idrisi","value":"Following the death of King Roger II, Muhammad al-Idrisi remained in Palermo to draft a second expanded geographical book and compile treatises on medicinal plants across multiple regional languages.","unit":null,"confidence":"HIGH","evidence":"Following the death of King Roger II, he remains in Palermo to draft a second, expanded geographical book. … During this late period, he also produces significant treatises on medicinal plants, systematically compiling and cataloguing drug names across multiple regional languages.","as_of":null,"as_of_precision":null,"normalized_value":"following the death of king roger ii, muhammad al-idrisi remained in palermo to draft a second expanded geographical book and compile treatises on medicinal plants across multiple regional languages."},{"article_id":"64c1e191-488c-47db-9b52-6af2dfbe31ce","id":"1fcb9622-6f34-4c81-874d-7e1c4ce3cac1","type":"date","subject":"Kitab Nuzhat al-Mushtaq","value":"Muhammad al-Idrisi's geography was printed in Rome in 1592 as one of the earliest Arabic books set in movable type.","unit":null,"confidence":"HIGH","evidence":"Printed in Rome in 1592, al-Idrisi's geography was one of the earliest Arabic books set in movable type, heavily influencing early modern European exploration.","as_of":"1592-01-01","as_of_precision":"year","normalized_value":"muhammad al-idrisi's geography was printed in rome in 1592 as one of the earliest arabic books set in movable type."},{"article_id":"64c1e191-488c-47db-9b52-6af2dfbe31ce","id":"2feaca5f-ffa1-4272-a05d-bde6a35ad124","type":"fact","subject":"Muhammad al-Idrisi","value":"Muhammad al-Idrisi accepted an invitation between 1138 and 1145 to join the Palermo court of King Roger II.","unit":null,"confidence":"HIGH","evidence":"Accepting an invitation between 1138 and 1145, al-Idrisi joins the Christian king's court as a premier collaborator.","as_of":null,"as_of_precision":null,"normalized_value":"muhammad al-idrisi accepted an invitation between 1138 and 1145 to join the palermo court of king roger ii."},{"article_id":"64c1e191-488c-47db-9b52-6af2dfbe31ce","id":"51ed2633-214e-4555-a287-97def63ca4db","type":"fact","subject":"Muhammad al-Idrisi","value":"Educated in Córdoba, Muhammad al-Idrisi traveled through the Iberian Peninsula, southern France, Anatolia, North Africa, and potentially England to gather primary geographic observations.","unit":null,"confidence":"HIGH","evidence":"Educated in Córdoba, al-Idrisi compiled primary geographic data through expansive physical journeys across Europe, Anatolia, and North Africa. … His travels carry him through the Iberian Peninsula, southern France, Anatolia, North Africa, and potentially as far as England","as_of":null,"as_of_precision":null,"normalized_value":"educated in córdoba, muhammad al-idrisi traveled through the iberian peninsula, southern france, anatolia, north africa, and potentially england to gather primary geographic observations."},{"article_id":"64c1e191-488c-47db-9b52-6af2dfbe31ce","id":"76b0c38c-6181-407f-9191-c35ed432f739","type":"fact","subject":"Muhammad al-Idrisi","value":"Over a fifteen-year partnership, Muhammad al-Idrisi and King Roger II dispatched observers and draftsmen to remote locations, cross-referencing eyewitness reports and verifying them against classical coordinates such as those of Ptolemy.","unit":null,"confidence":"HIGH","evidence":"Over a fifteen-year partnership, al-Idrisi and Roger dispatch observers and draftsmen to remote locations to document details. … They systematically cross-reference these eyewitness reports against one another and verify them against classical coordinates, such as those of Ptolemy","as_of":null,"as_of_precision":null,"normalized_value":"over a fifteen-year partnership, muhammad al-idrisi and king roger ii dispatched observers and draftsmen to remote locations, cross-referencing eyewitness reports and verifying them against classical coordinates such as those of ptolemy."},{"article_id":"64c1e191-488c-47db-9b52-6af2dfbe31ce","id":"854114bb-09cd-40d8-8e1b-1f42b030095c","type":"fact","subject":"Muhammad al-Idrisi","value":"Muhammad al-Idrisi was born around 1100 and remained active until 1165, collaborating closely with King Roger II of Sicily in Palermo to systematically collect, verify, and document geographic and cartographic information.","unit":null,"confidence":"HIGH","evidence":"Born around 1100 and active until 1165 … he collaborated closely with King Roger II of Sicily in Palermo to systematically collect, verify, and document geographic and cartographic information.","as_of":null,"as_of_precision":null,"normalized_value":"muhammad al-idrisi was born around 1100 and remained active until 1165, collaborating closely with king roger ii of sicily in palermo to systematically collect, verify, and document geographic and cartographic information."},{"article_id":"64c1e191-488c-47db-9b52-6af2dfbe31ce","id":"9dc90ef9-0cbd-4fa1-9f2f-3bfee3f9054e","type":"fact","subject":"Muhammad al-Idrisi","value":"Muhammad al-Idrisi constructed a silver planisphere featuring fine engravings of celestial constellations on one side and coordinates and contours of the world's major landmasses and seas on the opposite side.","unit":null,"confidence":"HIGH","evidence":"Al-Idrisi constructed a massive silver planisphere and matching celestial globe to physically model the stars and known earthly terrain. … the silver planisphere features fine engraving of celestial constellations on one side. … The opposite surface displays the coordinates and physical contours of the world's major landmasses and seas.","as_of":null,"as_of_precision":null,"normalized_value":"muhammad al-idrisi constructed a silver planisphere featuring fine engravings of celestial constellations on one side and coordinates and contours of the world's major landmasses and seas on the opposite side."},{"article_id":"64c1e191-488c-47db-9b52-6af2dfbe31ce","id":"e2e59128-2931-4913-8eae-229d77377c9f","type":"date","subject":"Kitab Nuzhat al-Mushtaq","value":"Muhammad al-Idrisi's primary geographic corpus, the Kitab Nuzhat al-Mushtaq (also known as the Book of Roger), was completed in 1154.","unit":null,"confidence":"HIGH","evidence":"Completed in 1154, al-Idrisi's primary geographic corpus delivers a high-accuracy, multi-sheet world map accompanied by rigorous physical and economic descriptions. … The work, also known as the Book of Roger, bridges cartographic visual execution with deep encyclopedic descriptions.","as_of":"1154-01-01","as_of_precision":"year","normalized_value":"muhammad al-idrisi's primary geographic corpus, the kitab nuzhat al-mushtaq (also known as the book of roger), was completed in 1154."},{"article_id":"64c1e191-488c-47db-9b52-6af2dfbe31ce","id":"e440468f-d21b-4d31-b13c-e72048274ffb","type":"fact","subject":"Muhammad al-Idrisi","value":"Muhammad al-Idrisi was born around 1100 in Ceuta to a noble lineage tracing back to Hammudid and Idrisid roots.","unit":null,"confidence":"HIGH","evidence":"Al-Idrisi's lineage derives from noble Hammudid and Idrisid roots … Born around 1100 in Ceuta","as_of":null,"as_of_precision":null,"normalized_value":"muhammad al-idrisi was born around 1100 in ceuta to a noble lineage tracing back to hammudid and idrisid roots."},{"article_id":"64c1e191-488c-47db-9b52-6af2dfbe31ce","id":"ee465ad9-62be-4b93-80b0-3eae8d27e248","type":"definition","subject":"Tabula Rogeriana","value":"The Tabula Rogeriana is a world map of Eurasia and North Africa assembled from seventy individual sectional sheets, drawn with south oriented at the top according to medieval Islamic cartographic conventions.","unit":null,"confidence":"HIGH","evidence":"The Tabula Rogeriana is a highly precise pre-modern world map assembled from seventy individual sectional sheets. … Spanning the entire known world of Eurasia and North Africa, the map represents the pinnacle of twelfth-century cartography. … the maps are drawn with south oriented at the top of the sheets, adhering directly to established Islamic cartographic conventions of the medieval era.","as_of":null,"as_of_precision":null,"normalized_value":"the tabula rogeriana is a world map of eurasia and north africa assembled from seventy individual sectional sheets, drawn with south oriented at the top according to medieval islamic cartographic conventions."},{"article_id":"64c1e191-488c-47db-9b52-6af2dfbe31ce","id":"fe0f02d2-c494-403b-a8de-0a6101b6e8e4","type":"fact","subject":"Al-Idrisi Montes","value":"The Al-Idrisi Montes mountain range on Pluto is named in honor of Muhammad al-Idrisi's contributions to cartography and geography.","unit":null,"confidence":"HIGH","evidence":"Al-Idrisi's contributions are commemorated in modern science through the naming of the Al-Idrisi Montes range on Pluto.","as_of":null,"as_of_precision":null,"normalized_value":"the al-idrisi montes mountain range on pluto is named in honor of muhammad al-idrisi's contributions to cartography and geography."}],"facts_total":11,"facts_returned":11,"facts_truncated":false,"facts_offset":0,"facts_next_offset":null,"full_via":["include_facts","include_members","include_report"]},"report":null,"provenance":{"contributed_at":"2026-10-24T23:04:33.652Z","supersedes":null,"superseded_by":null},"as_of":"2026-10-24T23:04:33.652Z"}