Pope Sylvester II ( – 12 May 1003), originally known as Gerbert of Aurillac, was a French-born scholar and teacher who served as the

bishop of Rome A bishop is an ordained clergy member who is entrusted with a position of Episcopal polity, authority and oversight in a religious institution. In Christianity, bishops are normally responsible for the governance of dioceses. The role or offic ...

and ruled the

Papal States The Papal States ( ; it, Stato Pontificio, ), officially the State of the Church ( it, Stato della Chiesa, ; la, Status Ecclesiasticus;), were a series of territories in the Italian Peninsula under the direct sovereign rule of the pope fro ...

from 999 to his death. He endorsed and promoted study of Arab and Greco-Roman arithmetic, mathematics and astronomy, reintroducing to Europe the

abacus The abacus (''plural'' abaci or abacuses), also called a counting frame, is a calculating tool which has been used since ancient times. It was used in the ancient Near East, Europe, China, and Russia, centuries before the adoption of the Hi ...

and armillary sphere, which had been lost to

Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...

Europe since the end of the Greco-Roman era. He is said to be the first in Europe to introduce the decimal numeral system using the Hindu-Arabic numeral system. He is credited with the invention of the first mechanical clock in 996.

Early life

Gerbert was born about 946 in the town of Belliac, near the present-day commune of

Saint-Simon, Cantal Saint-Simon (; Auvergnat: ''Sant Simon'') is a commune in the Cantal department in south-central France. The medieval town of Belliac, located near the present-day Saint-Simon, was the birthplace (in 946) of the prolific scholar Gerbert d'Au ...

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan area ...

. Around 963, he entered the

Monastery of St. Gerald of Aurillac A monastery is a building or complex of buildings comprising the domestic quarters and workplaces of monastics, monks or nuns, whether living in communities or alone (hermits). A monastery generally includes a place reserved for prayer which ...

. In 967, Count Borrell II of Barcelona (947–992) visited the monastery, and the abbot asked the count to take Gerbert with him so that the lad could study mathematics in

Catalonia Catalonia (; ca, Catalunya ; Aranese Occitan: ''Catalonha'' ; es, Cataluña ) is an autonomous community of Spain, designated as a '' nationality'' by its Statute of Autonomy. Most of the territory (except the Val d'Aran) lies on the nort ...

and acquire there some knowledge of Arabic learning.

Scholarly work

Gerbert studied under the direction of Bishop

Atto of Vich Atto may refer to: People Given name * Atto Melani (born 1626–1714), Italian opera singer * Atto Mensah (born 1964), Sierra Leonean football player and coach * Adalbert Atto of Canossa (died 988), Count of Canossa * Atto (archbishop of ...

, some 60 km north of Barcelona, and probably also at the nearby

Monastery of Santa Maria de Ripoll The Monastery of Santa Maria de Ripoll is a Benedictine monastery, built in the Romanesque style, located in the town of Ripoll in Catalonia, Spain. Although much of the present church is 19th century rebuilding, the sculptured portico is a renown ...

. Like all Catalan monasteries, it contained manuscripts from

Muslim Spain Al-Andalus DIN 31635, translit. ; an, al-Andalus; ast, al-Ándalus; eu, al-Andalus; ber, ⴰⵏⴷⴰⵍⵓⵙ, label=Berber languages, Berber, translit=Andalus; ca, al-Àndalus; gl, al-Andalus; oc, Al Andalús; pt, al-Ândalus; es, ...

and especially from Cordoba, one of the intellectual centres of Europe at that time: the library of

al-Hakam II Al-Hakam II, also known as Abū al-ʿĀṣ al-Mustanṣir bi-Llāh al-Hakam b. ʿAbd al-Raḥmān (; January 13, 915 – October 16, 976), was the Caliph of Córdoba. He was the second ''Umayyad'' Caliph of Córdoba in Al-Andalus, and son of Ab ...

, for example, had thousands of books (from science to Greek philosophy). This is where Gerbert was introduced to mathematics and

astronomy Astronomy () is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, g ...

. Borrell II was facing major defeat from the Andalusian powers so he sent a delegation to Córdoba to request a truce. Bishop Atto was part of the delegation that met with al-Ḥakam II, who received him with honour. Gerbert was fascinated by the stories of the Mozarab Christian bishops and judges who dressed and talked like the Arabs, well-versed in mathematics and natural sciences like the great teachers of the Islamic madrasahs. This sparked Gerbert's veneration for the Arabs and his passion for mathematics and astronomy.

Abacus and numerals

Gerbert learned of Hindu–Arabic digits and applied this knowledge to the

, but probably without the numeral

zero 0 (zero) is a number representing an empty quantity. In place-value notation such as the Hindu–Arabic numeral system, 0 also serves as a placeholder numerical digit, which works by multiplying digits to the left of 0 by the radix, usual ...

. According to the 12th-century historian

William of Malmesbury William of Malmesbury ( la, Willelmus Malmesbiriensis; ) was the foremost English historian of the 12th century. He has been ranked among the most talented English historians since Bede. Modern historian C. Warren Hollister described him as " ...

, Gerbert got the idea of the computing device of the abacus from a Moorish scholar. The abacus that Gerbert reintroduced into Europe had its length divided into 27 parts with 9 number symbols (this would exclude zero, which was represented by an empty column) and 1,000 characters in all, crafted out of

animal horn Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motilit ...

by a shieldmaker of Rheims.. According to his pupil Richer, Gerbert could perform speedy calculations with his abacus that were extremely difficult for people in his day to think through using only Roman numerals. Due to Gerbert's reintroduction, the abacus became widely used in Europe once again during the 11th century.

Armillary sphere and sighting tube

Although lost to Europe since the terminus of the Greco-Roman era, Gerbert reintroduced the astronomical armillary sphere to Latin Europe via the Islamic civilization of Al-Andalus, which was at that time at the "cutting edge" of civilization. The details of Gerbert's armillary sphere are revealed in letters from Gerbert to his former student and monk Remi of Trèves and to his colleague Constantine, the

abbot Abbot is an ecclesiastical title given to the male head of a monastery in various Western religious traditions, including Christianity. The office may also be given as an honorary title to a clergyman who is not the head of a monastery. The ...

Micy Micy Abbey or the Abbey of Saint-Mesmin, Micy (french: Abbaye Saint-Mesmin de Micy), sometimes referred to as Micy, was a Benedictine abbey near Orléans at the confluence of the Loire and the Loiret, located on the territory of the present commun ...

, as well as the accounts of his former student and French nobleman Richer, who served as a monk in

Rheims Reims ( , , ; also spelled Rheims in English) is the most populous city in the French department of Marne, and the 12th most populous city in France. The city lies northeast of Paris on the Vesle river, a tributary of the Aisne. Founded by ...

. Richer stated that Gerbert discovered that stars coursed in an oblique direction across the night sky.. Richer described Gerbert's use of the armillary sphere as a visual aid for teaching mathematics and astronomy in the classroom. Historian Oscar G. Darlington asserts that Gerbert's division by 60 degrees instead of 360 allowed the lateral lines of his sphere to equal to six degrees.. By this account, the

polar circle A polar circle is a geographic term for a conditional circular line (arc) referring either to the Arctic Circle or the Antarctic Circle. These are two of the keynote circles of latitude (parallels). On Earth, the Arctic Circle is currently d ...

on Gerbert's sphere was located at 54 degrees, several degrees off from the actual 66° 33'. His positioning of the

Tropic of Cancer The Tropic of Cancer, which is also referred to as the Northern Tropic, is the most northerly circle of latitude on Earth at which the Sun can be directly overhead. This occurs on the June solstice, when the Northern Hemisphere is tilted tow ...

at 24 degree was nearly exact, while his positioning of the equator was correct by definition. Richer also revealed how Gerbert made the planets more easily observable in his armillary sphere:

He succeeded equally in showing the paths of the planets when they come near or withdraw from the earth. He fashioned first an armillary sphere. He joined the two circles called by the Greeks ''coluri'' and by the Latins ''incidentes'' because they fell upon each other, and at their extremities he placed the poles. He drew with great art and accuracy, across the ''colures'', five other circles called parallels, which, from one pole to the other, divided the half of the sphere into thirty parts. He put six of these thirty parts of the half-sphere between the pole and the first circle; five between the first and the second; from the second to the third, four; from the third to the fourth, four again; five from the fourth to the fifth; and from the fifth to the pole, six. On these five circles he placed obliquely the circles that the Greeks call ''loxos'' or ''zoe'', the Latins ''obliques'' or ''vitalis'' (the zodiac) because it contained the figures of the animals ascribed to the planets. On the inside of this oblique circle he figured with an extraordinary art the orbits traversed by the planets, whose paths and heights he demonstrated perfectly to his pupils, as well as their respective distances.

Richer wrote about another of Gerbert's last armillary spheres, which had sighting tubes fixed on the axis of the hollow sphere that could observe the constellations, the forms of which he hung on iron and copper wires.. This armillary sphere was also described by Gerbert in a letter to his colleague Constantine.. Gerbert instructed Constantine that, if doubtful of the position of the

pole star A pole star or polar star is a star, preferably bright, nearly aligned with the axis of a rotating astronomical body. Currently, Earth's pole stars are Polaris (Alpha Ursae Minoris), a bright magnitude-2 star aligned approximately with its ...

, he should fix the sighting tube of the armillary sphere into position to view the star he suspected was it, and if the star did not move out of sight, it was thus the pole star.. Furthermore, Gerbert instructed Constantine that the north pole could be measured with the upper and lower sighting tubes, the Arctic Circle through another tube, the Tropic of Cancer through another tube, the equator through another tube, and the

Tropic of Capricorn The Tropic of Capricorn (or the Southern Tropic) is the circle of latitude that contains the subsolar point at the December (or southern) solstice. It is thus the southernmost latitude where the Sun can be seen directly overhead. It also reac ...

through another tube.

Ecclesiastical career

In 969, Borrell II made a pilgrimage to

Rome , established_title = Founded , established_date = 753 BC , founder = King Romulus (legendary) , image_map = Map of comune of Rome (metropolitan city of Capital Rome, region Lazio, Italy).svg , map_caption ...

, taking Gerbert with him. There Gerbert met Pope John XIII and

Emperor Otto I Otto I (23 November 912 – 7 May 973), traditionally known as Otto the Great (german: Otto der Große, it, Ottone il Grande), was East Frankish king from 936 and Holy Roman Emperor from 962 until his death in 973. He was the oldest son of He ...

. The pope persuaded Otto I to employ Gerbert as a tutor for his young son,

Otto II Otto II (955 – 7 December 983), called the Red (''der Rote''), was Holy Roman Emperor from 973 until his death in 983. A member of the Ottonian dynasty, Otto II was the youngest and sole surviving son of Otto the Great and Adelaide of Ita ...

. Some years later, Otto I gave Gerbert leave to study at the cathedral school of Rheims where he was soon appointed a teacher by Archbishop Adalberon. When Otto II became sole

emperor An emperor (from la, imperator, via fro, empereor) is a monarch, and usually the sovereignty, sovereign ruler of an empire or another type of imperial realm. Empress, the female equivalent, may indicate an emperor's wife (empress consort), ...

in 973, he appointed Gerbert the abbot of the monastery of Bobbio and also appointed him as count of the district, but the abbey had been ruined by previous abbots, and Gerbert soon returned to Rheims. After the death of Otto II in 983, Gerbert became involved in the politics of his time. In 985, with the support of his archbishop, he opposed King

Lothair of France Lothair (french: Lothaire; la, Lothārius; 941 – 2 March 986), sometimes called Lothair II,After the emperor Lothair I. IIICounting Lothair II of Lotharingia, who ruled over modern Lorraine and Belgium. or IV,Counting Lothair II of Ita ...

's attempt to take

Lorraine Lorraine , also , , ; Lorrain: ''Louréne''; Lorraine Franconian: ''Lottringe''; german: Lothringen ; lb, Loutrengen; nl, Lotharingen is a cultural and historical region in Northeastern France, now located in the administrative region of Gra ...

from Emperor Otto III by supporting

Hugh Capet Hugh Capet (; french: Hugues Capet ; c. 939 – 14 October 996) was the King of the Franks from 987 to 996. He is the founder and first king from the House of Capet. The son of the powerful duke Hugh the Great and his wife Hedwige of Saxony, ...

. Hugh became king of France, ending the Carolingian line of kings in 987. Adalberon died on 23 January 989.. Gerbert was a natural candidate for his succession, but King Hugh appointed Arnulf, an illegitimate son of King Lothair, instead. Arnulf was deposed in 991 for alleged treason against Hugh, and Gerbert was elected his successor. There was so much opposition to Gerbert's elevation to the See of Rheims, however, that

Pope John XV Pope John XV ( la, Ioannes XV; died on 1 April 996) was the bishop of Rome and ruler of the Papal States from August 985 until his death. A Roman by birth, he was the first pope who canonized a saint. The origins of the investiture controversy ...

(985–996) sent a legate to France who temporarily suspended Gerbert from his episcopal office. Gerbert sought to show that this decree was unlawful, but a further synod in 995 declared Arnulf's deposition invalid. Gerbert then became the teacher of Otto III, and Pope Gregory V (996–999), Otto III's cousin, appointed him

archbishop of Ravenna This page is a list of Roman Catholic bishops and archbishops of Ravenna and, from 1985, of the Archdiocese of Ravenna-Cervia. With imperial support, Gerbert was elected to succeed Gregory V as

pope The pope ( la, papa, from el, πάππας, translit=pappas, 'father'), also known as supreme pontiff ( or ), Roman pontiff () or sovereign pontiff, is the bishop of Rome (or historically the patriarch of Rome), head of the worldwide Cathol ...

in 999. Gerbert took the name of Sylvester II, alluding to Sylvester I (314–335), the advisor to Emperor

Constantine I Constantine I ( , ; la, Flavius Valerius Constantinus, ; ; 27 February 22 May 337), also known as Constantine the Great, was Roman emperor from AD 306 to 337, the first one to Constantine the Great and Christianity, convert to Christiani ...

(324–337). Soon after he became pope, Sylvester II confirmed the position of his former rival Arnulf as archbishop of Rheims. As pope, he took energetic measures against the widespread practices of simony and concubinage among the clergy, maintaining that only capable men of spotless lives should be allowed to become bishops. In 1001, the Roman populace revolted, forcing Otto III and Sylvester II to flee to

Ravenna Ravenna ( , , also ; rgn, Ravèna) is the capital city of the Province of Ravenna, in the Emilia-Romagna region of Northern Italy. It was the capital city of the Western Roman Empire from 408 until its collapse in 476. It then served as the ca ...

. Otto III led two unsuccessful expeditions to regain control of the city and died on a third expedition in 1002. Sylvester II returned to Rome soon after the emperor's death, although the rebellious nobility remained in power, and died a little later. Sylvester is buried in

St. John Lateran The Archbasilica Cathedral of the Most Holy Savior and of Saints John the Baptist and John the Evangelist in the Lateran ( it, Arcibasilica del Santissimo Salvatore e dei Santi Giovanni Battista ed Evangelista in Laterano), also known as the Papa ...

Legacy

Gerbert of Aurillac was a humanist long before the Renaissance. He read

Virgil Publius Vergilius Maro (; traditional dates 15 October 7021 September 19 BC), usually called Virgil or Vergil ( ) in English, was an ancient Roman poet of the Augustan period. He composed three of the most famous poems in Latin literature: th ...

Cicero Marcus Tullius Cicero ( ; ; 3 January 106 BC – 7 December 43 BC) was a Roman statesman, lawyer, scholar, philosopher, and academic skeptic, who tried to uphold optimate principles during the political crises that led to the esta ...

and

Boethius Anicius Manlius Severinus Boethius, commonly known as Boethius (; Latin: ''Boetius''; 480 – 524 AD), was a Roman senator, consul, ''magister officiorum'', historian, and philosopher of the Early Middle Ages. He was a central figure in the tr ...

; he studied Latin translations of Porphyry and

Aristotle Aristotle (; grc-gre, Ἀριστοτέλης ''Aristotélēs'', ; 384–322 BC) was a Greek philosopher and polymath during the Classical period in Ancient Greece. Taught by Plato, he was the founder of the Peripatetic school of ph ...

. He had a very accurate classification of the different disciplines of philosophy. He was the first French pope. Gerbert was said to be one of the most noted scientists of his time. Gerbert wrote a series of works dealing with matters of the

quadrivium From the time of Plato through the Middle Ages, the ''quadrivium'' (plural: quadrivia) was a grouping of four subjects or arts—arithmetic, geometry, music, and astronomy—that formed a second curricular stage following preparatory work in the ...

( arithmetic,

geometry Geometry (; ) is, with arithmetic, one of the oldest branches of mathematics. It is concerned with properties of space such as the distance, shape, size, and relative position of figures. A mathematician who works in the field of geometry is ...

music Music is generally defined as the art of arranging sound to create some combination of form, harmony, melody, rhythm or otherwise expressive content. Exact definitions of music vary considerably around the world, though it is an aspe ...

), which he taught using the basis of the

trivium The trivium is the lower division of the seven liberal arts and comprises grammar, logic, and rhetoric. The trivium is implicit in ''De nuptiis Philologiae et Mercurii'' ("On the Marriage of Philology and Mercury") by Martianus Capella, but t ...

(

grammar In linguistics, the grammar of a natural language is its set of structural constraints on speakers' or writers' composition of clauses, phrases, and words. The term can also refer to the study of such constraints, a field that includes domain ...

logic Logic is the study of correct reasoning. It includes both formal and informal logic. Formal logic is the science of deductively valid inferences or of logical truths. It is a formal science investigating how conclusions follow from premise ...

, and rhetoric). In Rheims, he constructed a

hydraulic Hydraulics (from Greek: Υδραυλική) is a technology and applied science using engineering, chemistry, and other sciences involving the mechanical properties and use of liquids. At a very basic level, hydraulics is the liquid counte ...

-powered organ with brass pipes that excelled all previously known instruments,. where the air had to be pumped manually. In a letter of 984, Gerbert asks

Lupitus of Barcelona Lupitus of Barcelona, identified with a Christian archdeacon called Sunifred, was an astronomer in late 10th century Barcelona, then part of the ''Marca Hispanica'' between Islamic Al-Andalus and Christian France (in 985 changing from Christian bac ...

for a book on

astrology Astrology is a range of divinatory practices, recognized as pseudoscientific since the 18th century, that claim to discern information about human affairs and terrestrial events by studying the apparent positions of celestial objects. Di ...

and

, two terms historian S. Jim Tester says Gerbert used synonymously. Gerbert may have been the author of a description of the astrolabe that was edited by Hermannus Contractus some 50 years later. Besides these, as Sylvester II he wrote a dogmatic treatise, ''De corpore et sanguine Domini''—On the Body and Blood of the Lord.

Legends

The legend of Gerbert grows from the work of the English monk William of Malmesbury in '' De Rebus Gestis Regum Anglorum'' and a polemical pamphlet, ''Gesta Romanae Ecclesiae contra Hildebrandum'', by Cardinal Beno, a partisan of Emperor Henry IV who opposed Pope Gregory VII in the

Investiture Controversy The Investiture Controversy, also called Investiture Contest ( German: ''Investiturstreit''; ), was a conflict between the Church and the state in medieval Europe over the ability to choose and install bishops ( investiture) and abbots of mona ...

. According to the legend, Gerbert, while studying mathematics and astrology in the Muslim cities of Córdoba and

Seville Seville (; es, Sevilla, ) is the capital and largest city of the Spanish autonomous community of Andalusia and the province of Seville. It is situated on the lower reaches of the River Guadalquivir, in the southwest of the Iberian Peninsula ...

, was accused of having learned sorcery. Gerbert was supposed to be in possession of a book of spells stolen from an Arab philosopher in Spain. Gerbert fled, pursued by the victim, who could trace the thief by the stars, but Gerbert was aware of the pursuit, and hid hanging from a wooden bridge, where, suspended between heaven and earth, he was invisible to the magician. Gerbert was supposed to have built a brazen head. This "robotic" head would answer his questions with "yes" or "no". He was also reputed to have had a

pact A pact, from Latin ''pactum'' ("something agreed upon"), is a formal agreement between two or more parties. In international relations, pacts are usually between two or more sovereign states. In domestic politics, pacts are usually between two or ...

with a female demon called Meridiana, who had appeared after he had been rejected by his earthly love, and with whose help he managed to ascend to the papal throne (another legend tells that he won the papacy playing dice with the Devil). According to the legend, Meridiana (or the bronze head) told Gerbert that if he should ever read a

Mass Mass is an intrinsic property of a body. It was traditionally believed to be related to the quantity of matter in a physical body, until the discovery of the atom and particle physics. It was found that different atoms and different eleme ...

in Jerusalem, the Devil would come for him. Gerbert then cancelled a pilgrimage to Jerusalem, but when he read Mass in the church

Santa Croce in Gerusalemme The Basilica of the Holy Cross in Jerusalem or Basilica di Santa Croce in Gerusalemme, ( la, Basilica Sanctae Crucis in Hierusalem) is a Catholic Minor basilica and titular church in rione Esquilino, Rome, Italy. It is one of the Seven Pilgrim ...

("Holy Cross of Jerusalem") in Rome, he became sick soon afterwards and, dying, he asked his cardinals to cut up his body and scatter it across the city. In another version, he was even attacked by the Devil while he was reading the Mass, and the Devil mutilated him and gave his gouged-out eyes to demons to play with in the Church. Repenting, Sylvester II then cut off his hand and his tongue. The inscription on Gerbert's tomb reads in part ''Iste locus Silvestris membra sepulti venturo Domino conferet ad sonitum'' ("This place will yield to the sound f the last trumpetthe limbs of buried Sylvester II, at the advent of the Lord", mis-read as "will make a sound") and has given rise to the curious legend that his bones will rattle in that tomb just before the death of a pope. The alleged story of the crown and papal legate authority given to

Stephen I of Hungary Stephen I, also known as King Saint Stephen ( hu, Szent István király ; la, Sanctus Stephanus; sk, Štefan I. or Štefan Veľký; 975 – 15 August 1038), was the last Grand Prince of the Hungarians between 997 and 1000 or 1001, and the ...

by Sylvester in the year 1000 (hence the title '

apostolic king His (Royal) Apostolic Majesty was a styled title used by the Kings of Hungary, in the sense of being latter-day apostles of Christianity. First creation The origin of this title dates from about A.D. 1000 when it was conferred by Pope Silvester ...

') is noted by the 19th-century historian Lewis L. Kropf as a possible forgery of the 17th century. Likewise, the 20th-century historian Zoltan J. Kosztolnyik states that "it seems more than unlikely that Rome would have acted in fulfilling Stephen's request for a crown without the support and approval of the

Honours

Hungary issued a commemorative stamp honouring Pope Sylvester II on 1 January 1938, and France honoured him in 1964 by issuing a postage stamp.

Works

Pope Sylvester II (Gerbert d'Aurillac) - De geometria

Gerbert's writings were printed in volume 139 of the '' Patrologia Latina''. Darlington notes that Gerbert's preservation of his letters might have been an effort of his to compile them into a textbook for his pupils that would illustrate proper letter writing. His books on mathematics and astronomy were not research-oriented; his texts were primarily educational guides for his students. ;Mathematical writings *''Libellus de numerorum divisione'' *''De geometria'' *''Regula de abaco computi'' *''Liber abaci'' *''Libellus de rationali et ratione uti'' ;Ecclesiastical writings *''Sermo de informatione episcoporum'' *''De corpore et sanguine Domini'' *''Selecta e concil. Basol., Remens., Masom., etc.'' ;Letters *''Epistolae ante summum pontificatum scriptae'' (218 letters, including letters to the emperor, the pope, and various bishops) *''Epistolae et decreta pontificia'' (15 letters to various abbots and bishops, including Arnulf) **a dubious letter to Otto III **five short poems ;Other writings *''Acta concilii Remensis ad S. Basolum'' *''Leonis legati epistola ad Hugonem et Robertum reges'' *''Celebacy for the guarantee of our future''

In popular culture

* Gerbert D'Aurillac appears as an adversary in

Deborah Harkness Deborah Harkness (born 1965) is an American scholar and novelist, best known as an historian and as the author of the All Souls Trilogy, which consists of ''The New York Times'' best-selling novel ''A Discovery of Witches (book series), A Disc ...

' novel series called the '' All Souls Trilogy''. He is portrayed by

Trevor Eve Trevor John Eve (born 1 July 1951) is an English film and television actor. In 1979 he gained fame as the eponymous lead in the detective series ''Shoestring'' and is also known for his role as Detective Superintendent Peter Boyd in BBC televi ...

in the trilogy's television adaptation. * Gerbert d'Aurillac is the protagonist of

Judith Tarr Judith Tarr (born January 30, 1955) is an American fantasy and science fiction author. Life Tarr was born in Augusta, Maine on January 30, 1955. She is the daughter of Earle A. Tarr, Jr. (a waterworks manager and salesman of real estate), and ...

's 1989 novel ''Ars Magica''.

Notes

References

Citations

Bibliography

* * * * * *

External links

Catholic Encyclopedia Betty Mayfield, "Gerbert d'Aurillac and the March of Spain: A Convergence of Cultures"
lecture by Lynn H. Nelson.

includes four of his letters to

Adelaide of Italy Adelaide of Italy (german: Adelheid; 931 – 16 December 999 AD), also called Adelaide of Burgundy, was Holy Roman Empress by marriage to Emperor Otto the Great; she was crowned with him by Pope John XII in Rome on 2 February 962. She was the ...

. {{DEFAULTSORT:Sylvester 02 940s births 1003 deaths 10th-century mathematicians 10th-century archbishops 10th-century astronomers 10th-century apocalypticists 10th-century French writers 10th-century Latin writers 10th-century poets 10th-century popes 11th-century archbishops 11th-century French people 11th-century popes Archbishops of Reims Benedictine popes Catholic clergy scientists French popes Medieval French astronomers Medieval French mathematicians People from Cantal Popes 10th-century French philosophers Burials at the Archbasilica of Saint John Lateran