The Epistle of the Number

Name: The Epistle of the Number
Author: Isaac b. Solomon ibn al-Aḥdab b. Ṣaddiq Sefardi Isaac ben Solomon ben Ẓaddik al-Aḥdab 13..-1431?

İsim	The Epistle of the Number
Yazar	Isaac b. Solomon ibn al-Aḥdab b. Ṣaddiq Sefardi Isaac ben Solomon ben Ẓaddik al-Aḥdab 13..-1431?
Basım Tarihi:	16th century
Basım Yeri	- Cambridge University Library
Tür	Kitap
Dil	İbranice
Dijital	Evet
Yazma	Evet
Fiziksel Boyutlar	Leaf: (height: 300 mm, width: 210 mm)
Kütüphane:	Ortadoğu Dijital Kütüphanesi
Demirbaş Numarası	MS Add.492.1
Kayıt Numarası	cambridge_hebrew-4
Lokasyon	Cambridge University Library
Tarih	16th century
Notlar	Isaac b. Solomon ibn al-Aḥdab b. Ṣaddiq Sefardi's The Epistle of the Number was composed at the end of the 14th century after Isaac settled in Syracuse, Sicily, and this is the only known copy of the work. The Epistle is a translation and enlargement of the famous Talḵīṣ ʿAmal al-Ḥisāb ('A summary of the operations of calculation', 13th century) by the Moroccan Muslim mathematician Ibn al-Bannā ابن البنّاء‎ and it is especially notable in being the first known treatise in Hebrew to include extensive algebraic theories and operations. The Epistle attests novel mathematical vocabulary and enhances our linguistic understanding of the mechanisms that helped create the scientific vocabulary of Medieval Hebrew. The work proper begins on f.1v, with an explanation of how Isaac came to compose the Epistle. Book 1, arithmetical operations on integers, fractions and roots is on ff.1v–25r, and consists of three parts: part 1, arithmetical operations on integers; part 2, arithmetical operations on fractions; and part 3, arithmetical operations on the roots of expressible (rational) and inexpressible (irrational) quantities. Book 2, the rules which enable us to obtain the unknown from the given known, is on ff.27r–38v, and also consists of three parts: part 1, proportions and scales; part 2, the algebraic operations of restoration and operation; part 3, solution of problems of a practical nature by methods of algebra. The last words in part 3, on folio 38v, are 'another example', thus the manuscript is truncated. First words and headings are written in larger, bolder script; some words and the numerals in calculations are rubricated. There are tables with both Hebrew and Arabic numerals, as well as diagrams. There are occasional marginal calculations in a different hand, e.g., f.6r, as well as manicules, e.g., f.7v. Diagrams include the place-value numerical system with zero and Hindu-Arabic numerals, f.2r; various scales, ff.25v–26v; and multiplication tables of algebraic expressions, f.34v. Unrelated to the Epistle, f. 1r describes a mathematical problem, with a diagram of two birds sitting on two towers of unequal height, and referring to Elijah Mizraḥi אליה המזרחי in the last line. Various elaborate signatures and owners' marks follow in the lower half of the leaf, including the name Judah Eli יאודה עלי. \| Condition: Slightly affected by damp, a few pages show evidence of ink corrosion. \| Layout: Written in one column with 37-38 lines per page. \| more \| less
Parçası Olduğu	Hebrew Manuscripts Collection
Malzeme	Paper

Kaynağa git Ortadoğu Dijital Kütüphanesi Digital Library of the Middle East

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Ortadoğu Dijital Kütüphanesi

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The Epistle of the Number

Yazar Isaac b. Solomon ibn al-Aḥdab b. Ṣaddiq Sefardi Isaac ben Solomon ben Ẓaddik al-Aḥdab 13..-1431?

Basım Tarihi 16th century

Basım Yeri - Cambridge University Library

Tür Kitap

Dil İbranice

Dijital Evet

Yazma Evet

Fiziksel Boyutlar Leaf: (height: 300 mm, width: 210 mm)

Kütüphane Ortadoğu Dijital Kütüphanesi

Demirbaş Numarası MS Add.492.1

Kayıt Numarası cambridge_hebrew-4

Lokasyon Cambridge University Library

Tarih 16th century

Notlar Isaac b. Solomon ibn al-Aḥdab b. Ṣaddiq Sefardi's The Epistle of the Number was composed at the end of the 14th century after Isaac settled in Syracuse, Sicily, and this is the only known copy of the work. The Epistle is a translation and enlargement of the famous Talḵīṣ ʿAmal al-Ḥisāb ('A summary of the operations of calculation', 13th century) by the Moroccan Muslim mathematician Ibn al-Bannā ابن البنّاء‎ and it is especially notable in being the first known treatise in Hebrew to include extensive algebraic theories and operations. The Epistle attests novel mathematical vocabulary and enhances our linguistic understanding of the mechanisms that helped create the scientific vocabulary of Medieval Hebrew. The work proper begins on f.1v, with an explanation of how Isaac came to compose the Epistle. Book 1, arithmetical operations on integers, fractions and roots is on ff.1v–25r, and consists of three parts: part 1, arithmetical operations on integers; part 2, arithmetical operations on fractions; and part 3, arithmetical operations on the roots of expressible (rational) and inexpressible (irrational) quantities. Book 2, the rules which enable us to obtain the unknown from the given known, is on ff.27r–38v, and also consists of three parts: part 1, proportions and scales; part 2, the algebraic operations of restoration and operation; part 3, solution of problems of a practical nature by methods of algebra. The last words in part 3, on folio 38v, are 'another example', thus the manuscript is truncated. First words and headings are written in larger, bolder script; some words and the numerals in calculations are rubricated. There are tables with both Hebrew and Arabic numerals, as well as diagrams. There are occasional marginal calculations in a different hand, e.g., f.6r, as well as manicules, e.g., f.7v. Diagrams include the place-value numerical system with zero and Hindu-Arabic numerals, f.2r; various scales, ff.25v–26v; and multiplication tables of algebraic expressions, f.34v. Unrelated to the Epistle, f. 1r describes a mathematical problem, with a diagram of two birds sitting on two towers of unequal height, and referring to Elijah Mizraḥi אליה המזרחי in the last line. Various elaborate signatures and owners' marks follow in the lower half of the leaf, including the name Judah Eli יאודה עלי. | Condition: Slightly affected by damp, a few pages show evidence of ink corrosion. | Layout: Written in one column with 37-38 lines per page. | more | less

Parçası Olduğu Hebrew Manuscripts Collection

Malzeme Paper